HomeCostNest guides
How HomeCostNest Calculates Project Costs
HomeCostNest combines a project's visible inputs with a configured market profile to produce Low, Typical, and High planning estimates. The result is a budgeting aid—not a binding quotation, valuation, specification, or substitute for project-specific professional advice.
50 published calculators
100 configured market profiles
Per-profile assumptions and review dates
Profile totals are derived from the published calculator catalogue. Market availability is recorded per calculator and should not be assumed for tools outside that catalogue.
How an estimate is produced
- 1. Choose a project
- 2. Select US or UK
- 3. Enter valid project details
- 4. Apply the configured benchmark and supported adjustments
- 5. Review the range, assumptions, and exclusions
A primary measurement or project band establishes the baseline. Supported selections may then apply a fixed allowance, per-unit allowance, or percentage adjustment. Invalid, empty, or out-of-range numeric input pauses the estimate rather than silently substituting a different project size.
Low, Typical, and High ranges
Low represents the lower configured planning scenario. Typical is the central reference used by that profile; depending on the calculator, it may be the midpoint of a range, a stored benchmark, or an internal planning convention. High represents the upper configured scenario, which may reflect higher specification, complexity, or supported additional work.
These three values are scenarios from the same model, not promises that a contractor will quote inside the range. They do not express statistical confidence or a guaranteed local market interval.
US and UK market treatment
United States profiles
Use USD, US terminology, and profile-specific units such as square feet or linear feet.
United Kingdom profiles
Use GBP, UK terminology, and profile-specific units such as square metres or metres.
Markets are not produced through currency conversion alone. Each market profile can contain different benchmarks, options, assumptions, terminology, methodology, and source notes.
Measurements and market switching
Where a field describes the same physical dimension in both markets, HomeCostNest converts the displayed value when switching units so that the project does not silently change size. Counts and values already using the same unit are retained. Where the US and UK fields represent different concepts—for example, repair area versus affected wall length—the value resets to the documented market default and the page explains the reset.
Included costs, exclusions, and planning-only inputs
The selected calculator shows its methodology and assumptions beside the estimate. Installed benchmarks may already include ordinary labour or installation; supported add-ons are included only when selected. Permits, taxes or VAT, design work, structural investigation, unusual access, hidden damage, disposal, specialist remediation, and contingency are not automatically included unless the profile says they are.
Some inputs provide planning context without changing price. Those fields are labelled planning-only. They remain useful for defining the project, but HomeCostNest does not invent a multiplier when the stored model does not support one.
Source and modelling labels
External source reference
A named publication or organization used as benchmark context. A reference does not imply endorsement or verification of every calculator output.
Internal modelling assumption
A HomeCostNest decision used to structure a range, midpoint, option, or adjustment where it is not presented as a directly sourced price.
Estimated allowance
A supported amount added for a selected part of the project. It remains an estimate rather than a supplier or contractor quote.
Data limitation
A boundary such as missing local variation, unavailable source URL, uncertain site conditions, or a factor that requires a project-specific assessment.
HomeCostNest does not describe a profile as independently professionally verified unless that verification is documented. Review dates indicate an internal content/data review date, not independent certification.
Why a contractor quote may differ
Actual prices can change with postcode or region, contractor availability, timing, material brand and specification, property condition, access, minimum charges, design decisions, permits, taxes, warranties, and work discovered after opening up the property. Obtain itemised local quotes and the appropriate professional assessment before committing to work.
Published profile details
The disclosures below show the current configured benchmark basis, supported adjustments, assumptions, source description, and review date for each published calculator profile.
Driveway Cost CalculatorUS · UK
United States
USD · sq ft · Installed driveway surface planning ranges with selected removal and site-work allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Concrete | $6 | $11 | $15 | per sq ft |
| Asphalt | $5 | $9 | $12 | per sq ft |
| Gravel | $4 | $7 | $10 | per sq ft |
| Pavers | $10 | $20 | $30 | per sq ft |
Adjustments / add-ons: Existing driveway removal, Site conditions
HomeCostNest planning assumptions: Normal site preparation is represented by the installed material ranges.
Internal modelling note
Reviewed US V1 planning dataset
Internal modelling note
public reference links to be added/refined.
The current record describes an internal planning dataset or modelling note, not an external citation.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · m² · Installed driveway surface planning ranges with selected removal; additional groundwork and drainage require site-specific pricing.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Gravel | £50 | £60 | £70 | per m² |
| Tarmac | £70 | £90 | £110 | per m² |
| Concrete | £70 | £95 | £110 | per m² |
| Block paving | £90 | £110 | £130 | per m² |
| Resin-bound | £100 | £120 | £140 | per m² |
Adjustments / add-ons: Existing driveway removal, Site conditions
HomeCostNest planning assumptions: Normal installation is represented by the installed material ranges.
Source reference
Checkatrade
Driveway Costs in the UK (2026 prices, updated April 2026)
Source reference
Driveway Block Paving Cost Breakdown 2026 (updated May 2026)
Source reference
Tarmac Driveway Cost 2026 (updated June 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
Heat Pump Cost CalculatorUS · UK
United States
USD · sq ft · The installed system type establishes the base range. Equipment tier and selected ductwork are shown separately; ductwork should not be selected for ductless systems.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Air-source / whole-home | $8,000 | $10,500 | $20,000 | installed system / project range |
| Ductless mini-split | $2,000 | $9,500 | $17,000 | installed system / project range |
| Geothermal | $20,000 | $35,000 | $50,000 | installed system / project range |
Adjustments / add-ons: Equipment tier, New/replacement ductwork
HomeCostNest planning assumptions: Home size is rough planning context only; it does not determine equipment sizing. Professional sizing requires an ACCA Manual J load calculation. Permits may add roughly $50–$300 depending on jurisdiction.
Source reference
Angi 2026
Source reference
HomeGuide 2026
Source reference
This Old House 2026
Source reference
ENERGY STAR
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · m² · System type establishes the UK project range. Selected radiators, underfloor heating, and pipework are isolated allowances. Estimates are before any grant and home size does not determine final kW sizing.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Air-to-water ASHP | £11,000 | £15,000 | £20,000 | installed system / project range |
| Air-to-air ASHP | £2,000 | £3,000 | £4,000 | installed system / project range |
| Ground source heat pump | £18,000 | £34,000 | £50,000 | installed system / project range |
Adjustments / add-ons: Larger radiators (around 10), Underfloor heating, Heating pipework replacement
HomeCostNest planning assumptions: Pipework bounds are a HomeCostNest planning assumption around the reviewed £2,000 allowance. Insulation upgrades are not included. Boiler Upgrade Scheme support is not subtracted because eligibility can change.
Source reference
Checkatrade
Air Source Heat Pump Costs UK 2026 (updated May 2026)
Source reference
Ground Source Heat Pump Cost 2026 (updated August 2026)
Source reference
Cost to Replace Boiler With Heat Pump 2026 (updated August 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
Bathroom Remodel Cost CalculatorUS · UK
United States
USD · sq ft · Bathroom area uses the selected installed scope range. Finish and special selections are modest HomeCostNest planning allowances; ordinary fixtures are already represented in broad remodel ranges.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Minor renovation | $0 | $0 | $0 | per sq ft |
| Partial remodel | $50 | $100 | $150 | per sq ft |
| Full remodel | $150 | $250 | $350 | per sq ft |
Adjustments / add-ons: Finish level, Special shower installation, Heated floor upgrade, Major layout / plumbing changes
HomeCostNest planning assumptions: Typical is the midpoint of supplied installed ranges, not a published national average. Permits are not included and local requirements vary.
Source reference
HomeGuide 2026
Source reference
Angi 2026
Source reference
This Old House 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · m² · The reviewed UK full-bathroom project range is the baseline. Size bands, finish, and layout changes are modest HomeCostNest planning assumptions; only explicit special work is added to avoid double-counting ordinary fixtures.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Small / compact bathroom | £1,200 | £3,600 | £6,000 | installed system / project range |
| Standard bathroom | £1,500 | £4,500 | £7,500 | installed system / project range |
| Large bathroom | £1,800 | £5,400 | £9,000 | installed system / project range |
Adjustments / add-ons: Finish quality, Plumbing / layout change, Walk-in shower upgrade, Standard shower installation, Bath installation
HomeCostNest planning assumptions: Compact and large size bands are HomeCostNest planning adjustments around the published national project range. Finish and layout adjustments are isolated planning assumptions. Ordinary shower and bath replacement are already represented by the broad remodel baseline.
Source reference
Checkatrade
Bathroom Remodel Cost UK 2026 (updated May 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
Roof Replacement Cost CalculatorUS · UK
United States
USD · sq ft · Roof area is multiplied by installed material rates. Removal, limited decking repair, and access are separate allowances; decking does not assume the whole roof needs replacement.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Architectural asphalt | $0 | $0 | $0 | per sq ft |
| Asphalt 3-tab | -$1 | -$1 | -$1 | per sq ft |
| Metal | $1 | $6 | $10 | per sq ft |
| Tile | $3 | $11 | $19 | per sq ft |
| Natural slate | $6 | $15 | $24 | per sq ft |
Adjustments / add-ons: Old-roof removal, Some decking repair, Roof pitch, Complex roof / access
HomeCostNest planning assumptions: Material-specific tear-off allowances should be refined further in a later dataset update. Steep pitch and complex access are modest HomeCostNest planning adjustments. Permits are not included; they commonly vary roughly $100–$500.
Source reference
HomeGuide 2026 Roof Replacement
Source reference
HomeGuide 2026 Tear Off and Replace
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · m² · Roof area is multiplied by selected supply-and-fit material rates. Roof shape is a modest context adjustment rather than a second installed-rate baseline. Scaffolding and skip hire appear only when selected; structural repairs and other roof works are excluded.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Natural slate | £160 | £218 | £275 | per m² |
| Plain concrete tiles | £120 | £175 | £230 | per m² |
| Clay tiles | £160 | £218 | £275 | per m² |
| Flat EPDM / rubber | £80 | £90 | £100 | per m² |
Adjustments / add-ons: Roof shape / complexity context, Two-storey semi scaffolding, Include skip hire
HomeCostNest planning assumptions: Roof-shape adjustments are calibrated HomeCostNest planning context, not a second full roof-type rate. Relevant source tables may be quoted +VAT; VAT treatment should be confirmed with the installer. Insulation, rafters/trusses, leadwork, fascias, soffits, and rainwater goods are not included.
Source reference
Checkatrade
Roof Replacement Cost Breakdown 2026 (updated March 2026)
Source reference
Roof Installation Cost Guide 2026 (updated June 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
Window Replacement Cost CalculatorUS · UK
United States
USD · windows · Installed style is the base range. Frame, glass, installation, and access are isolated planning adjustments to avoid stacking duplicate full-window costs.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Double-hung | $0 | $0 | $0 | per windows |
| Single-hung | -$50 | -$225 | -$400 | per windows |
| Casement | $50 | $275 | $500 | per windows |
| Awning | $50 | -$225 | -$500 | per windows |
| Picture | -$50 | -$625 | -$1,200 | per windows |
| Bay | $1,650 | $2,575 | $3,500 | per windows |
| Bow | $2,650 | $4,075 | $5,500 | per windows |
Adjustments / add-ons: Frame material, Glass specification, Full-frame replacement, Difficult second-storey access
HomeCostNest planning assumptions: Low-E uses a 10% / 15% / 20% HomeCostNest application of supplied guidance. Frame and full-frame adjustments are HomeCostNest modeling assumptions. Permits are not included; opening-size changes may require them.
Source reference
HomeGuide 2026
Source reference
Angi 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · windows · The selected installed window style establishes the per-window range. Aluminium, timber, and triple glazing use isolated calibrated percentage adjustments so full style costs are not double-counted. Full-frame work and access are shown separately.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| uPVC casement | £0 | £0 | £0 | per windows |
| Sash | £250 | £800 | £1,230 | per windows |
| Bay | £650 | £1,500 | £1,830 | per windows |
| Bow | £750 | £1,150 | £1,730 | per windows |
Adjustments / add-ons: Frame material, Glazing, Full-frame installation, Difficult upper-storey access
HomeCostNest planning assumptions: Aluminium and timber premiums are HomeCostNest calibrated planning assumptions around published guidance. Triple glazing is a premium adjustment, not an additional £1,200 full-window cost. FENSA/Certass and building compliance should be confirmed with the installer.
Source reference
Checkatrade
New Windows Cost Guide & Calculator 2026 (updated July 2026)
Source reference
Cost of Replacing Sash Windows 2026 (updated June 2026)
Source reference
Flush Casement Window Costs 2026 (updated July 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
HVAC Replacement Cost CalculatorUS · UK
United States
USD · sq ft · Installed system type establishes the base range. Equipment tier, ductwork, and thermostat are separate allowances; home size is a context cross-check only.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Furnace + central AC | $5,000 | $8,000 | $11,000 | installed system / project range |
| Central AC only | $3,300 | $5,950 | $8,300 | installed system / project range |
| Furnace only | $2,000 | $3,700 | $5,400 | installed system / project range |
Adjustments / add-ons: Equipment tier, New/replacement ductwork, Include thermostat
HomeCostNest planning assumptions: Final HVAC sizing should be based on a professional load calculation. Equipment tier adjustments are HomeCostNest planning assumptions, not national averages. Permits are not included and vary by jurisdiction.
Source reference
HomeGuide 2026 HVAC
Source reference
HomeGuide 2026 Ductwork
Source reference
Angi 2026 HVAC and AC
Source reference
ENERGY STAR
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
United Kingdom
GBP · m² · The selected system type determines the full UK baseline; the HVAC replacement range is not mixed with central-heating installation ranges. Selected additional pipework, radiators, and controls are isolated allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Existing HVAC heating/cooling replacement | £5,000 | £7,250 | £10,000 | installed system / project range |
| Gas central heating | £4,500 | £5,250 | £6,000 | installed system / project range |
| Electric central heating | £3,230 | £3,790 | £4,350 | installed system / project range |
| Oil central heating | £5,000 | £6,150 | £7,300 | installed system / project range |
Adjustments / add-ons: Additional pipework / radiators, Heating controls upgrade
HomeCostNest planning assumptions: The HVAC replacement low and high bounds are HomeCostNest planning bounds around the reviewed £7,250 typical benchmark. Normal system-level radiators and pipework are not added again. Final capacity should be determined by a professional design, not property area alone.
Source reference
Checkatrade
HVAC Cost UK 2026 (updated May 2026)
Source reference
Central Heating Installation Cost UK 2026 (updated May 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 20, 2026
Garage Conversion Cost CalculatorUS · UK
United States
USD · sq ft · Garage floor area uses the reviewed US conversion-to-living-space planning range. Detached garages, bathrooms, kitchens, and structural work are shown separately; choose only one kitchen option.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Attached / integral garage | $0 | $0 | $0 | planning adjustment |
| Detached garage | $0 | $0 | $0 | planning adjustment |
Adjustments / add-ons: Add bathroom, Kitchen option, Structural condition
HomeCostNest planning assumptions: Detached-garage adjustment is a HomeCostNest planning assumption. Major structural uncertainty can materially change the estimate after professional inspection. Permits, design, major foundation reconstruction, service upgrades, engineering, and extensive utility relocation are excluded.
Internal modelling note
HomeCostNest reviewed US V1 planning dataset
The current record describes an internal planning dataset or modelling note, not an external citation.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Floor area uses reviewed per-m² conversion rates. Garage type is a transparent calibrated per-m² adjustment; bathroom and kitchen are explicit add-ons only.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Integral | £0 | -£188 | -£375 | per m² |
| Attached | £0 | £0 | £0 | per m² |
| Detached | £313 | £313 | £313 | per m² |
Adjustments / add-ons: Add bathroom, Add kitchen, Additional structural work
HomeCostNest planning assumptions: Structural allowance is a HomeCostNest planning assumption. Building Regulations and planning fees are not included.
Source reference
Checkatrade Garage Conversion Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
Loft Conversion Cost CalculatorUS · UK
United States
USD · sq ft · Finished attic area uses the reviewed US planning range. Dormer or major roof work, a bathroom, permanent stairs, and reinforcement are explicit selections; major roof modification should not be stacked with another major structural allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Basic existing-roof conversion | $0 | $0 | $0 | per sq ft |
| Dormer addition | $5,000 | $15,000 | $30,000 | per sq ft |
| Major roof modification | $15,000 | $35,000 | $60,000 | per sq ft |
Adjustments / add-ons: Add bathroom, New permanent staircase, Additional reinforcement
HomeCostNest planning assumptions: Feasibility depends on headroom, floor structure, stairs, egress, insulation, electrical/HVAC, and local requirements. This calculator does not determine code compliance. Permits, design, and unusual structural engineering are excluded.
Internal modelling note
HomeCostNest reviewed US V1 planning dataset
The current record describes an internal planning dataset or modelling note, not an external citation.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Type-specific rates are derived systematically from supplied 30m² project ranges. Ensuite and exceptional structural conditions are separate allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Velux / rooflight | £0 | £0 | £0 | per m² |
| Dormer | £583 | £750 | £1,000 | per m² |
| Hip-to-gable | £917 | £1,083 | £1,333 | per m² |
| Modular | £250 | £583 | £1,000 | per m² |
| Mansard | £917 | £1,250 | £1,667 | per m² |
| Shell | £0 | £83 | £250 | per m² |
Adjustments / add-ons: Add bathroom / ensuite, Exceptional structural conditions
HomeCostNest planning assumptions: Roof structure, staircase, steelwork, access and specification can materially affect quotes. Building Regulations fees are not included.
Source reference
Checkatrade Loft Conversion Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
House Extension Cost CalculatorUS · UK
United States
USD · sq ft · Total new finished floor area uses the reviewed US home-addition per-square-foot range. The selected scope is an alternative area profile, while kitchen, bathroom, and explicitly selected reinforcement are separate allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Standard finished room addition | $0 | $0 | $0 | per sq ft |
| Basic / simple addition | -$25 | -$75 | -$150 | per sq ft |
| Higher-spec / complex addition | $75 | $100 | $100 | per sq ft |
Adjustments / add-ons: Add kitchen fit-out, Add bathroom, Additional structural reinforcement
HomeCostNest planning assumptions: Enter total floor area for all storeys; no generic two-storey multiplier is added. Architect/designer and engineering fees, permits, zoning, utility relocation, unusual foundations, demolition, and financing are excluded. Typical is a HomeCostNest planning midpoint, not automatically a published national average.
Internal modelling note
HomeCostNest reviewed US V1 planning dataset
The current record describes an internal planning dataset or modelling note, not an external citation.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Total new floor area uses reviewed full-extension rates excluding VAT. A two-storey project uses the same per-m² benchmark when total floor area is entered; kitchen and bathroom are explicit add-ons.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Functional full extension | £0 | £0 | £0 | per m² |
| Shell only | -£600 | -£950 | -£1,300 | per m² |
Adjustments / add-ons: Add kitchen, Add bathroom
HomeCostNest planning assumptions: Base extension benchmark excludes VAT. Professional fees, planning, Building Control, party-wall, ground conditions and unusual structural work are excluded.
Source reference
Checkatrade House Extension Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
Double Glazing Cost CalculatorUS · UK
United States
USD · windows · The selected double-pane window style is the installed per-window baseline. Frame, glazing, full-frame replacement, and difficult access use isolated HomeCostNest percentage adjustments without adding a second full-window cost.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Casement | $0 | $0 | $0 | per windows |
| Double-hung | -$50 | -$100 | -$200 | per windows |
| Single-hung | -$150 | -$250 | -$500 | per windows |
| Sliding | -$100 | -$150 | -$300 | per windows |
| Picture | -$200 | -$250 | -$500 | per windows |
| Bay | $1,000 | $2,100 | $4,000 | per windows |
| Bow | $1,500 | $3,100 | $5,500 | per windows |
Adjustments / add-ons: Frame material, Glazing, Full-frame replacement, Difficult access / opening repair
HomeCostNest planning assumptions: Frame, glazing, installation, and access percentages are HomeCostNest planning assumptions. Permit requirements vary, especially when changing structural openings. Same-size replacement requirements should be confirmed locally.
Internal modelling note
HomeCostNest reviewed US V1 planning dataset
The current record describes an internal planning dataset or modelling note, not an external citation.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · windows · Installed window style is the baseline; frame and glazing use modest HomeCostNest planning adjustments per window, while difficult access remains a separate project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Casement | £0 | £0 | £0 | per windows |
| Sash | £200 | £200 | £250 | per windows |
| Sliding | £100 | £100 | £150 | per windows |
| Tilt and turn | £100 | £100 | £150 | per windows |
| Bay | £600 | £1,500 | £2,750 | per windows |
| Bow | £1,000 | £2,000 | £3,750 | per windows |
Adjustments / add-ons: Frame material, Glazing, Difficult access or opening repair
HomeCostNest planning assumptions: Consider keeping a 10–15% contingency for unexpected work; it is not added automatically. Planning and compliance fees are not included.
Source reference
Checkatrade Double Glazing Cost UK 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 19, 2026
Kitchen Remodel Cost CalculatorUS · UK
United States
USD · sq ft · Kitchen floor area uses a US installed remodel planning rate. Remodel level changes the area-based scope, while cabinetry, worktops, appliances, and layout changes are separate project allowances. Kitchen costs do not scale perfectly with area because fixed cabinetry, appliance, and trade costs are significant.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $75 | $105 | $140 | per sq ft |
Adjustments / add-ons: Remodel level, Cabinet level, Countertop level, Appliance allowance, Layout / plumbing changes
HomeCostNest planning assumptions: The estimate is a planning range, not a contractor quote. Structural work, permits, design fees, and unusual electrical or ventilation work are excluded. Actual pricing varies with location, materials, condition, and contractor scope.
Source reference
Angi
How Much Does a Kitchen Remodel Cost? (2026 Data, updated September 4, 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · UK kitchen area is used as a planning baseline with native GBP rates. Renovation level scales with area, while units, worktops, appliances, and layout changes are separate allowances. Fixed cabinetry and trade costs mean the relationship with floor area is not perfectly linear.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £380 | £550 | £750 | per m² |
Adjustments / add-ons: Renovation level, Cabinetry / units, Worktop level, Appliance allowance, Plumbing, electrical, or layout changes
HomeCostNest planning assumptions: This is a planning estimate, not a contractor quotation. Building work, permits, design fees, and unusual service relocations are excluded. Quotes vary by region, material specification, property condition, and installer.
Source reference
Checkatrade
Kitchen renovation: Cost breakdown 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Flooring Installation Cost CalculatorUS · UK
United States
USD · sq ft · The baseline represents installed laminate flooring per square foot. Each material and selected preparation item is an explicit per-square-foot adjustment, so removal, underlayment, and levelling scale with floor area.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Laminate | $0 | $0 | $0 | per sq ft |
| Vinyl / LVP | $1 | $3 | $4 | per sq ft |
| Engineered wood | $3 | $6 | $10 | per sq ft |
| Hardwood | $5 | $10 | $16 | per sq ft |
| Tile | $4 | $8 | $15 | per sq ft |
Adjustments / add-ons: Remove existing flooring, Include underlayment, Subfloor preparation / levelling
HomeCostNest planning assumptions: Furniture moving, trims, stairs, moisture remediation, and structural repairs are excluded unless quoted separately. This is a planning estimate; material availability and local labour can materially affect quotes.
Source reference
Angi
Flooring Installation Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · The UK baseline represents installed laminate flooring per m². Material, removal, underlay, and subfloor levelling are explicitly modelled as native per-m² adjustments.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Laminate | £0 | £0 | £0 | per m² |
| LVT / vinyl | £20 | £35 | £50 | per m² |
| Engineered wood | £35 | £50 | £70 | per m² |
| Solid hardwood | £60 | £85 | £115 | per m² |
| Tile | £30 | £55 | £90 | per m² |
Adjustments / add-ons: Remove existing flooring, Include underlay, Subfloor levelling
HomeCostNest planning assumptions: Stairs, intricate patterns, damp remediation, trims, and major repairs are excluded. Pricing is a planning range and can change with labour, material specification, and subfloor condition.
Source reference
Checkatrade
Wooden Flooring and Laminate Flooring cost guides (2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Interior Painting Cost CalculatorUS · UK
United States
USD · sq ft · Paintable wall area is the baseline, not floor area. Wall condition, paint specification, ceilings, and trim are modelled as per-square-foot scope adjustments; major repair remains a fixed project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $2 | $3 | $4 | per sq ft |
Adjustments / add-ons: Wall condition, Paint quality, Include ceilings, Include trim / woodwork, Major surface repair / preparation
HomeCostNest planning assumptions: The estimate assumes accessible occupied rooms and normal numbers of coats. Wallpaper removal, lead-safe work, major plastering, and extensive furniture moving are excluded.
Source reference
Angi
Interior and Exterior Painting Costs (2026 Data, updated April 16, 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Paintable wall area is the UK baseline, using native per-m² painting ranges. Scope selections scale with wall area, while major repair is a separate fixed allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £10 | £15 | £20 | per m² |
Adjustments / add-ons: Wall condition, Paint quality, Include ceilings, Include trim / woodwork, Major surface repair / preparation
HomeCostNest planning assumptions: Day rates are reflected in the planning range but not shown as a separate charge. Wallpaper stripping, major plaster repair, and specialist finishes are excluded.
Source reference
Checkatrade
Painting and Decorating Cost Breakdown 2026 (updated June 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Exterior Painting Cost CalculatorUS · UK
United States
USD · sq ft · Exterior wall area uses a US painting baseline. Surface type, access, and normal preparation scale with paintable area; stripping is a separate fixed allowance because scope varies substantially.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $2 | $3 | $4 | per sq ft |
Adjustments / add-ons: Exterior surface, Stories / access, Surface condition, Stripping / major preparation
HomeCostNest planning assumptions: The estimate is for a planning scope, not a façade inspection. Lead-safe work, major repair, permits, and specialist coatings are excluded unless separately quoted.
Source reference
Angi
Cost to Paint a House Exterior (2026 Data, updated July 20, 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · UK exterior wall area uses native per-m² painting rates. Access and normal preparation scale with area, while scaffolding and major stripping are clear fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £20 | £30 | £40 | per m² |
Adjustments / add-ons: Property access / storeys, Surface condition, Scaffolding required, Stripping / major preparation
HomeCostNest planning assumptions: This is a planning estimate; property height, access, substrate condition, and regional labour rates can change quotes. Major repair, specialist coatings, and listed-building requirements are excluded.
Source reference
Checkatrade
Cost to Paint Exterior of House 2026 (cost table updated April 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Siding Replacement Cost CalculatorUS · UK
United States
USD · sq ft · Exterior coverage area uses installed vinyl siding as the US baseline. Material, removal, and access scale explicitly with area; additional preparation is a separate allowance to avoid assuming unknown repairs.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Vinyl | $0 | $0 | $0 | per sq ft |
| Aluminium | -$1 | -$1 | $0 | per sq ft |
| Engineered wood | $2 | $4 | $7 | per sq ft |
| Fibre cement | $3 | $6 | $10 | per sq ft |
| Brick / masonry premium | $7 | $14 | $22 | per sq ft |
Adjustments / add-ons: Remove existing siding, Home complexity / stories, Additional preparation
HomeCostNest planning assumptions: This is a planning estimate, not a contractor quote. Structural repairs, insulation upgrades, permits, and unusual moisture remediation are excluded. Material pricing and access conditions can materially change contractor quotes.
Source reference
Angi
Cost to Replace or Install Siding (2026 Data, updated August 3, 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · The UK model uses installed uPVC house cladding as a native per-m² baseline. Material, removal, and access scale with coverage area, while scaffolding remains a fixed project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| uPVC | £0 | £0 | £0 | per m² |
| Fibre cement / Cedral | £10 | £20 | £30 | per m² |
| Timber larch | £40 | £55 | £70 | per m² |
| Timber cedar | £90 | £110 | £130 | per m² |
| Aluminium | £140 | £160 | £180 | per m² |
| Zinc | £240 | £245 | £250 | per m² |
Adjustments / add-ons: Remove existing cladding, Property access / storeys, Scaffolding required
HomeCostNest planning assumptions: House cladding is the UK equivalent terminology used here instead of siding. Repairs to the structure, insulation, permits, and specialist detailing are excluded. Quotes vary by property condition, material system, access, and regional labour.
Source reference
Checkatrade
House Cladding Cost UK: 2026 Price Guide (updated August 2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Deck Cost CalculatorUS · UK
United States
USD · sq ft · Deck area uses an installed pressure-treated wood baseline. Material and design complexity are explicit per-square-foot adjustments; railings and removal are separate allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Pressure-treated wood | $0 | $0 | $0 | per sq ft |
| Cedar / premium timber | $8 | $14 | $20 | per sq ft |
| Composite | $15 | $25 | $35 | per sq ft |
| Premium composite / hardwood | $28 | $40 | $55 | per sq ft |
Adjustments / add-ons: Design complexity, Railing / balustrade, Old deck removal
HomeCostNest planning assumptions: Permits, foundations beyond normal scope, and unusual site work are excluded. This is a planning estimate, not a contractor quote.
Source reference
Angi
How Much Does It Cost to Build a Deck? (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Decking area uses native UK installed softwood rates. Material and raised construction scale per m²; handrails and removal stay separate.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Softwood timber | £0 | £0 | £0 | per m² |
| Hardwood | £35 | £55 | £80 | per m² |
| Composite | £45 | £70 | £100 | per m² |
Adjustments / add-ons: Installation type, Balustrade / handrail, Old decking removal
HomeCostNest planning assumptions: Ground conditions, permits, and exceptional access can change quotations.
Source reference
Checkatrade
Garden Landscaping Cost / Decking Cost
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Fence Cost CalculatorUS · UK
United States
USD · linear ft · Fence length uses installed wood fencing as the baseline. Material, height, removal, and difficult terrain explicitly scale per linear foot; the gate is fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Wood | $0 | $0 | $0 | per linear ft |
| Vinyl / PVC | $5 | $10 | $16 | per linear ft |
| Chain-link | -$2 | -$5 | -$8 | per linear ft |
| Aluminium | $8 | $18 | $35 | per linear ft |
| Composite | $4 | $10 | $18 | per linear ft |
Adjustments / add-ons: Fence height, Old fence removal, Include one gate, Difficult terrain / site
HomeCostNest planning assumptions: Permits, surveying, and unusual retaining work are excluded.
Source reference
Angi
Fence Installation Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · metres · UK installed timber-panel fencing is the per-metre baseline; £45 panel material figures are not treated as full installed cost.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Timber panel | £0 | £0 | £0 | per metres |
| Closeboard / feather edge | £15 | £25 | £40 | per metres |
| Composite | £55 | £85 | £120 | per metres |
| Metal | £40 | £70 | £110 | per metres |
Adjustments / add-ons: Fence height, Post type, Old fence removal, Include one gate
HomeCostNest planning assumptions: Difficult ground, local access, and disposal can change contractor quotes.
Source reference
Checkatrade
Fence Panel Installation Cost Breakdown 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Solar Panel Cost CalculatorUS · UK
United States
USD · kW · System size is measured in kW and uses native before-incentive US per-kW rates calibrated from per-watt installation costs. Battery storage is separate.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $2,300 | $2,600 | $2,850 | per kW |
Adjustments / add-ons: Equipment tier, Roof complexity, Electrical / service upgrade, Battery storage
HomeCostNest planning assumptions: Incentives, financing, savings, and utility rates are not included.
Source reference
EnergySage
Solar Panel Cost in 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · kW · UK solar PV uses a native per-kW installation model calibrated around a typical domestic system near £7,600. Batteries are not included by default.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £1,500 | £1,900 | £2,300 | per kW |
Adjustments / add-ons: Panel / equipment tier, Roof complexity, Additional scaffolding / access, Battery storage
HomeCostNest planning assumptions: Savings, export tariffs, grants, and financing are excluded.
Source reference
Energy Saving Trust
Solar panels: costs, savings and benefits explained
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Insulation Cost CalculatorUS · UK
United States
USD · sq ft · Material and location are explicit per-square-foot installed adjustments.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Fiberglass | $0 | $0 | $0 | per sq ft |
| Cellulose | $0 | $1 | $2 | per sq ft |
| Mineral wool | $1 | $2 | $3 | per sq ft |
| Rigid / foam | $2 | $4 | $5 | per sq ft |
Adjustments / add-ons: Installation location, Old insulation removal
HomeCostNest planning assumptions: Air sealing, remediation, and structural repairs are excluded.
Source reference
Angi
How Much Does Insulation Installation Cost? (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · UK installed loft-insulation rates include labour rather than presenting material-only prices as complete installation cost.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Quilt / mineral wool | £0 | £0 | £0 | per m² |
| Loose fill | £2 | £4 | £7 | per m² |
| PIR board | £25 | £35 | £45 | per m² |
Adjustments / add-ons: Existing insulation removal, Difficult access / loft boarding
HomeCostNest planning assumptions: Pipework, tank work, and major access alterations are excluded.
Source reference
Checkatrade
Loft Insulation Costs 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Basement Remodel Cost CalculatorUS · UK
United States
USD · sq ft · Existing basement area uses a finishing baseline; scope changes scale per square foot and specialist work is separate. New-basement excavation is not included.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Partially finished refresh | -$2 | -$5 | -$7 | per sq ft |
| Standard full finish | $0 | $0 | $0 | per sq ft |
| Higher-spec remodel | $8 | $15 | $25 | per sq ft |
Adjustments / add-ons: Add bathroom, Add kitchenette, Waterproofing / damp work, Egress / electrical upgrade
HomeCostNest planning assumptions: Structural work, excavation, permits, and severe water problems are excluded.
Source reference
Angi
How Much Does It Cost to Finish a Basement? (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · This estimates conversion of existing basement or cellar space using native UK per-m² ranges. It does not estimate new basement excavation.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £700 | £1,100 | £1,500 | per m² |
Adjustments / add-ons: Condition, Finish level, Add bathroom, Add kitchenette
HomeCostNest planning assumptions: Planning, excavation, structural engineering, and severe groundwater work are excluded.
Source reference
Checkatrade
Cost to Finish a Basement 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Foundation Repair Cost CalculatorUS · UK
United States
USD · sq ft · Affected area provides a scalable planning baseline. Repair method materially changes the per-square-foot cost, while severity and foundation type apply calibrated percentage adjustments. Engineering, soil investigation, and permits remain separate fixed allowances to avoid double-counting structural work.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Concrete slab | $0 | $0 | $0 | planning adjustment |
| Basement | $0 | $0 | $0 | planning adjustment |
| Crawl space | $0 | $0 | $0 | planning adjustment |
| Pier and beam | $0 | $0 | $0 | planning adjustment |
Adjustments / add-ons: Repair method / scope, Repair severity, Structural engineer inspection, Soil report / investigation, Permit allowance
HomeCostNest planning assumptions: This estimates repair of an existing foundation, not new-foundation construction. A professional inspection is required to determine the repair method. Actual pricing varies with soil, access, structure, location, and contractor scope.
Source reference
Angi
Foundation Repair Cost 2026
Source reference
Angi
Underpinning Foundation Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · metres · Affected foundation length is the quantity driver. Mass concrete underpinning is calibrated to approximately £1,000–£1,250 per metre in total; structural engineering, investigation, and professional fees are separate fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £0 | £0 | £0 | per metres |
Adjustments / add-ons: Repair type, Severity, Structural engineer, Building Control / professional fees, Ground investigation
HomeCostNest planning assumptions: This estimates repairs to an existing foundation or affected wall, not construction of a new foundation. Subsidence and underpinning require professional assessment. Access, ground conditions, structure, and regional labour can materially change quotations.
Source reference
Checkatrade
Foundation Repair Cost 2026
Source reference
Checkatrade
Underpinning Costs
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Concrete Slab Cost CalculatorUS · UK
United States
USD · sq ft · Slab area uses a standard installed 4-inch slab range. Thickness, finish, reinforcement, site preparation, and removal are explicit per-square-foot adjustments and are not duplicated elsewhere.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $4 | $6 | $8 | per sq ft |
Adjustments / add-ons: Slab thickness, Finish, Upgraded rebar / mesh, Site preparation, Old concrete removal
HomeCostNest planning assumptions: This estimates installation of a new slab. Engineering, permits, drainage, and unusual soil remediation are excluded. Actual costs vary with location, access, concrete pricing, and specification.
Source reference
Angi
Concrete Slab Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · The UK estimate is an installed per-m² planning model. Thickness reflects the volume relationship (area × thickness), calibrated from £150–£200 per m³ concrete pouring, while the baseline also includes ordinary formwork and labour. Preparation, reinforcement, pump access, and removal are separate.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £55 | £75 | £100 | per m² |
Adjustments / add-ons: Slab thickness, Sub-base / site preparation, Reinforcement, Concrete pump / access allowance, Old slab removal
HomeCostNest planning assumptions: The £150–£200 per m³ source range is not presented as a complete installed m² price. Engineering, Building Control, drainage, and exceptional ground work are excluded.
Source reference
Checkatrade
Concrete Pouring Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Patio Cost CalculatorUS · UK
United States
USD · sq ft · Patio area uses an installed basic-concrete baseline. Finish and ordinary preparation scale per square foot. Major grading and drainage are separate fixed allowances, while removal scales with area.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $4 | $7 | $10 | per sq ft |
Adjustments / add-ons: Patio material / finish, Site condition, Old patio removal, Additional drainage allowance
HomeCostNest planning assumptions: This is a planning estimate, not a contractor quote. Permits, retaining walls, extensive drainage, and unusual excavation are excluded. Actual pricing varies by location, access, materials, and site condition.
Source reference
Angi
Concrete Patio Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Patio material defines the installed per-m² planning rate through explicit adjustments to the concrete baseline. Preparation and removal scale with area; drainage and difficult access remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Concrete | £0 | £0 | £0 | per m² |
| Budget paving slabs | £5 | £20 | £35 | per m² |
| Brick | £15 | £35 | £55 | per m² |
| Flagstone / natural stone | £55 | £150 | £355 | per m² |
| Raised patio | £20 | £80 | £155 | per m² |
Adjustments / add-ons: Ground preparation, Old patio removal, Additional drainage, Difficult access
HomeCostNest planning assumptions: This is a planning estimate, not an installer quotation. Retaining walls, extensive drainage, steps, and unusual excavation are excluded. Actual costs vary with material specification, access, ground condition, and region.
Source reference
Checkatrade
Patio Laying Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Garage Build Cost CalculatorUS · UK
United States
USD · sq ft · New garage floor area uses an installed construction baseline that already represents normal foundation, walls, roof, and standard garage work. Garage type, specification, and site conditions are explicit per-square-foot adjustments. Electrical, insulation, an additional door, and plumbing remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Attached | $0 | $0 | $0 | per sq ft |
| Detached | $5 | $10 | $15 | per sq ft |
Adjustments / add-ons: Finish / specification, Site / foundation conditions, Electrical package, Insulation package, Additional garage door, Plumbing allowance
HomeCostNest planning assumptions: This estimates new garage construction, not conversion of existing garage space. Permits, design, utility relocation, exceptional excavation, and unusual structural engineering are excluded. Actual quotes vary with location, specification, access, and ground conditions.
Source reference
Angi
current garage construction and build-cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · New garage area uses a UK installed construction baseline. Structure, specification, and roof selections scale per m², while electrics, an additional garage door, and plumbing remain fixed allowances. Normal slab, roof, and wall construction are not added twice.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £1,000 | £1,400 | £1,800 | per m² |
Adjustments / add-ons: Garage structure, Construction specification, Roof, Electrics, Additional garage door, Plumbing allowance
HomeCostNest planning assumptions: This estimates new garage construction, not conversion of existing garage space. Planning permission, Building Regulations, professional fees, utility work, and exceptional ground conditions may be separate. Specification, access, location, and ground conditions can materially affect quotes.
Source reference
Current UK garage construction and build-cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Home Addition Cost CalculatorUS · UK
United States
USD · sq ft · Added floor area uses a US living-space construction baseline. Addition type and story materially change per-square-foot cost, while finish applies a calibrated percentage. Engineering, major electrical work, and HVAC extension remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Bedroom / living space | $0 | $0 | $0 | per sq ft |
| Family room | $10 | $20 | $35 | per sq ft |
| Kitchen addition | $80 | $130 | $200 | per sq ft |
| Bathroom addition | $100 | $160 | $240 | per sq ft |
| Primary suite | $110 | $190 | $290 | per sq ft |
Adjustments / add-ons: Project type, Finish level, Structural engineering, Major electrical / service upgrade, HVAC extension
HomeCostNest planning assumptions: This estimates a specific new living-space addition rather than a generic whole-project extension profile. Permits, architecture, site preparation, demolition, utility relocation, and unusual foundations may be separate. Standard construction is already represented and is not added again.
Source reference
Angi
current home-addition cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Added living area uses a native UK construction baseline. The intended room type and storey materially change the per-m² estimate, while finish applies a calibrated percentage. Fixed professional and service upgrades remain separate.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Additional bedroom | £0 | £0 | £0 | per m² |
| Living / family space | £50 | £100 | £175 | per m² |
| Kitchen addition | £350 | £600 | £900 | per m² |
| Bathroom / en-suite addition | £400 | £700 | £1,050 | per m² |
| Multi-purpose living space | £150 | £300 | £500 | per m² |
Adjustments / add-ons: Storey, Finish level, Structural engineering, Major electrical / service upgrade, Heating extension
HomeCostNest planning assumptions: This answers the cost of adding a specific type and amount of living space; the existing House Extension calculator remains the general UK extension tool. Planning, Building Regulations, architecture, party-wall work, site preparation, and unusual structural work may be separate. Standard construction is already represented and is not added again.
Source reference
Checkatrade
current UK house-extension cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Electrical Rewiring Cost CalculatorUS · UK
United States
USD · sq ft · Home area is multiplied by the reviewed installed whole-home rewiring range. Wiring condition, project scope, and access are explicit per-square-foot adjustments. Permits, inspection, a service-panel upgrade, and wall repair remain optional fixed project allowances so they are not automatically included or scaled with area.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Standard whole-home rewire | $0 | $0 | $0 | per sq ft |
| Essential rewiring | -$0 | -$0 | -$1 | per sq ft |
| Extensive / code-upgrade rewire | $1 | $1 | $2 | per sq ft |
Adjustments / add-ons: Home / wiring condition, Wall / access condition, Electrical permit, Electrical inspection, Service panel upgrade, Wall / drywall repair allowance
HomeCostNest planning assumptions: This estimates substantial or whole-home rewiring, not a minor electrician visit. A new service panel is not included unless selected. Fixtures, smart-home systems, unusual service upgrades, and extensive decoration may require separate quotes.
Source reference
Angi
Cost to Rewire a House [2026 Data]
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Property floor area provides a scalable planning baseline calibrated to current one- to five-bedroom whole-property rewiring anchors. Property size/type, condition, and specification adjust the installed project range. Standard quotations commonly include removal of old wiring, new wiring, standard sockets and switches, a consumer unit, testing, and certification; major plastering and redecoration may be excluded.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £49 | £69 | £89 | per m² |
Adjustments / add-ons: Property size / type, Property condition, Electrical specification, Electrical Installation Condition Report (EICR), Post-rewire plastering / redecoration allowance
HomeCostNest planning assumptions: The selected property type should be paired with a realistic floor area. Temporary accommodation is not included. Specialist lighting, data, alarms, smart-home systems, and major incoming-supply work are excluded.
Source reference
Checkatrade
House Rewiring Cost Guide, 2026 prices
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Plumbing Replacement Cost CalculatorUS · UK
United States
USD · sq ft · Home area uses an installed whole-house repiping baseline calibrated around current national project ranges rather than material-only pipe prices. Pipe material and access scale with home area; plumbing density adjusts the installed subtotal. Permits, wall repair, and difficult slab access remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| PEX | $0 | $0 | $0 | per sq ft |
| CPVC | $0 | $1 | $1 | per sq ft |
| Copper | $2 | $3 | $4 | per sq ft |
Adjustments / add-ons: Home complexity, Fixture / plumbing density, Plumbing permit, Drywall / wall repair allowance, Difficult slab / foundation access
HomeCostNest planning assumptions: This estimates domestic water-supply repiping, not drain, sewer, leak-repair, or fixture work. Water-heater and fixture replacement are not included. Select difficult slab access only when it is not already represented in the chosen access scope.
Source reference
Angi
How Much Does It Cost to Repipe a House? [2026 Data]
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · This is a conservative UK installed planning model for whole-property domestic water-supply pipe replacement. Floor area provides scale, while plumbing density, pipe system, access, disruption, and labour adjust the project range. The rates are planning allowances calibrated to current plumber and project guidance, not a claimed precise national per-m² tariff.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Plastic / modern approved pipe system | £0 | £0 | £0 | per m² |
| Copper | £12 | £22 | £35 | per m² |
| Mixed / complex replacement | £20 | £35 | £55 | per m² |
Adjustments / add-ons: Property / plumbing density, Access, Investigation / survey, Making-good / redecoration allowance, Difficult floor-access allowance
HomeCostNest planning assumptions: Bathroom suites, boilers, hot-water cylinders, radiators, drainage, sewers, and major fixtures are excluded. Making-good is included only when selected. Select difficult floor access only when it represents work beyond the chosen general access level.
Source reference
Checkatrade
current UK plumbing and plumber cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Water Heater Replacement Cost CalculatorUS · UK
United States
USD · gallons · Tank capacity scales the reviewed installed tank-style replacement range. Fuel and equipment type scale with capacity, while installation modifications, access, permits, venting, utility upgrades, and removal are separate fixed project allowances. Installation labour already represented in the baseline is not added again.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Electric tank | $0 | $0 | $0 | per gallons |
| Natural gas tank | $2 | $5 | $10 | per gallons |
| Propane tank | $2 | $4 | $9 | per gallons |
| High-efficiency tank | $12 | $22 | $24 | per gallons |
| Hybrid heat-pump water heater | $8 | $18 | $34 | per gallons |
Adjustments / add-ons: Installation, Access, Permit, Power vent, Electrical upgrade, Gas-line modification, Old unit removal
HomeCostNest planning assumptions: This models tank-style replacement; tankless systems are excluded. The baseline assumes a normal residential replacement at the existing location. Select electrical or gas-line work only when additional modification is required.
Source reference
Angi
Water Heater Replacement Cost [2026 Data]
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · litres · Cylinder capacity scales an installed unvented-cylinder replacement range; supply-only pricing is not presented as the project total. Cylinder type scales with capacity, while pipework changes, access, relocation, additional pipework, and controls remain fixed project allowances. A full combi-to-system-boiler conversion is a larger heating project and is not included in the like-for-like baseline.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Indirect unvented | £0 | £0 | £0 | per litres |
| Direct unvented | £1 | £1 | £2 | per litres |
Adjustments / add-ons: Installation type, Access, Cylinder relocation, Additional pipework, Controls / upgrades
HomeCostNest planning assumptions: This estimates direct or indirect unvented hot-water-cylinder replacement, not a US-style tank water heater. Installation must comply with applicable UK Building Regulations and be completed by an appropriately qualified installer. A new boiler, radiators, and whole-heating-system conversion are excluded.
Source reference
Checkatrade
Unvented Hot Water Cylinder Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Tankless Water Heater Cost CalculatorUS · UK
United States
USD · GPM · A standard whole-house system allowance is combined with a modest flow-rate component calibrated to the reviewed installed project range at roughly 6 GPM. The full project range is not multiplied by GPM. System size establishes the project class, fuel and technology adjust the installed subtotal, and conversion or infrastructure work remains a fixed project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $80 | $120 | $160 | per GPM |
Adjustments / add-ons: System size, System / fuel type, Technology, Installation, Permit, Electrical service upgrade, Gas-line upgrade, Venting modification, Old heater removal
HomeCostNest planning assumptions: This estimates tankless or on-demand hot-water systems, not storage-tank replacement. The default represents a normal whole-house system near 6 GPM. Tax credits, rebates, finance costs, and operating savings are not deducted.
Source reference
Angi
How Much Does a Tankless Water Heater Cost? [2026 Data], updated August 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · L/min · A standard installed domestic-system allowance is combined with a modest L/min demand component, producing a typical straightforward project near the reviewed £500 unit plus £425 installation benchmark. The full installed project is not multiplied by flow rate. System size, energy source, installation complexity, and explicitly selected infrastructure work remain visible and separate.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £10 | £15 | £20 | per L/min |
Adjustments / add-ons: System size, Energy source, Installation, Electrical upgrade, Gas / pipework modification, System relocation, Old system removal
HomeCostNest planning assumptions: This models instantaneous or on-demand hot-water systems, not a stored hot-water cylinder. The default represents a straightforward standard domestic installation. Major incoming electrical or gas-supply work is included only when selected.
Source reference
Checkatrade
Tankless Water Heater Installation Cost Guide UK (2026)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Furnace Replacement Cost CalculatorUS · UK
United States
USD · BTU · Fuel type supplies the installed furnace project allowance, while BTU capacity adds only a modest sizing component calibrated around an 80,000 BTU normal replacement. The full project cost is not multiplied by BTU. Efficiency adjusts the installed subtotal; installation changes and selected removal, permit, controls, ductwork, and utility work remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $0 | $0 | $0 | per BTU |
Adjustments / add-ons: Fuel type, Efficiency, Installation, Old furnace removal, Permit, Thermostat / control upgrade, Ductwork modifications, Electrical / gas modifications
HomeCostNest planning assumptions: This estimates furnace replacement, not a complete heating-and-cooling system replacement. Complete duct replacement is not included. Capacity must be confirmed through an appropriate heating-load calculation.
Source reference
Angi
How Much Does a New Furnace Cost? [2026 Data], updated September 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Boiler type supplies the installed project allowance, while property area contributes only a modest system-sizing component around a standard home. This avoids claiming an unsupported simple national £/m² installation rate. Boiler-type conversion, relocation, controls, filtration, flushing, and radiator work remain explicit fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Gas combi | £2,000 | £2,300 | £3,000 | per m² |
| System boiler | £2,200 | £2,500 | £3,200 | per m² |
| Conventional / heat-only | £2,300 | £2,700 | £3,500 | per m² |
| Electric boiler | £2,400 | £3,000 | £3,200 | per m² |
| Oil boiler | £2,800 | £3,100 | £3,200 | per m² |
Adjustments / add-ons: Installation, Smart / Wi-Fi heating controls, Magnetic filter supplied and installed, Power flush, Additional radiator work
HomeCostNest planning assumptions: This is a UK boiler-replacement model, not a US furnace model. Complete radiator, pipework, hot-water-cylinder, and gas-main replacement are excluded. Gas work requires an appropriately Gas Safe registered engineer; oil work requires appropriately qualified installation such as OFTEC where applicable.
Source reference
Checkatrade
New Boiler Costs in 2026: Prices & Installation, updated March 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Central AC Replacement Cost CalculatorUS · UK
United States
USD · sq ft · System capacity supplies the installed central-AC project allowance, while home area adds only a modest sizing component around a normal residential project. The complete project range is not multiplied by area. Efficiency adjusts the installed subtotal; installation, duct modifications, and selected upgrades remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $1 | $1 | $1 | per sq ft |
Adjustments / add-ons: System capacity, Efficiency, Installation, Existing ductwork, Permit, Thermostat / control upgrade, Electrical modification, Refrigerant-line modification, Old equipment removal
HomeCostNest planning assumptions: This estimates cooling-focused central AC, not furnace or complete HVAC replacement. Full duct replacement is excluded. Professional equipment sizing should use a proper load calculation; area alone is not a Manual J assessment.
Source reference
Current Angi 2026 central AC installation and replacement cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Property area contributes a modest system-sizing component to a native UK installed ducted-air-conditioning allowance; US dollar or per-ton pricing is not converted. System size, specification, room count and layout, outdoor-unit placement, installation complexity, access, and drainage can materially change quotations.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £10 | £20 | £30 | per m² |
Adjustments / add-ons: Property / system size, System, Installation complexity, Electrical upgrade, Controls upgrade, Difficult access, Condensate / drainage work
HomeCostNest planning assumptions: Whole-home central air conditioning is less typical in UK homes than in the US. The model covers residential ducted or whole-home cooling, not boiler replacement. Planning, listed-building constraints, unusual structure, and major distribution alterations may require separate assessment.
Source reference
Current UK air-conditioning installation guidance consistent with Checkatrade 2026 market pricing
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Mini Split Installation Cost CalculatorUS · UK
United States
USD · zones · Zone count contributes a per-zone equipment-and-installation component, while the selected equipment tier provides the system-level allowance. This avoids multiplying the complete broad project range by every zone. Capability and installation scope adjust the project, while electrical, line-set, drainage, drilling, and removal work remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $750 | $1,500 | $3,000 | per zones |
Adjustments / add-ons: Equipment tier, System capability, Installation, Dedicated electrical circuit, Line-set complexity, Condensate pump, Wall / core-drilling complexity, Old equipment removal
HomeCostNest planning assumptions: This estimates a ductless split-system installation; ductwork is excluded. Zone count alone does not determine final equipment capacity. Structural work, exceptional line lengths, and major electrical-service upgrades may require separate quotations.
Source reference
Current Angi 2026 ductless mini-split installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · indoor units · Indoor-unit count supplies the zone-dependent installed component and the selected single- or multi-split configuration supplies the project-level allowance. Native UK installed planning ranges are used without converting US prices. Equipment, complexity, electrical work, drainage, placement, and pipework remain explicit.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £500 | £1,000 | £1,500 | per indoor units |
Adjustments / add-ons: System, Equipment, Installation, Electrical work, Condensate pump, Difficult outdoor-unit placement, Extended pipework
HomeCostNest planning assumptions: This estimates ductless split or multi-split air conditioning; ductwork is excluded. The number of indoor units should be confirmed against room loads and outdoor-unit capacity. Planning constraints, listed-building requirements, and unusual access are excluded unless selected.
Source reference
Current Checkatrade and UK air-conditioning installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Boiler Replacement Cost CalculatorUS · UK
United States
USD · sq ft · Fuel type supplies the installed hydronic-boiler allowance, while home area adds only a modest heating-capacity component. The complete project range is not multiplied by area, and area alone is not a professional heat-loss calculation. Efficiency, installation, distribution work, and selected fixed allowances are shown separately.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $1 | $1 | $2 | per sq ft |
Adjustments / add-ons: Fuel, Boiler specification, Installation, Distribution / piping, Old boiler removal, Permit, Controls / thermostat, Circulator / pump work, Expansion tank, Vent / flue modification
HomeCostNest planning assumptions: This estimates a hydronic boiler, not a forced-air furnace. Complete radiator replacement is not included by default. Final boiler capacity should be selected using an appropriate heat-loss assessment.
Source reference
Current Angi 2026 residential boiler replacement cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · This is a broader UK boiler-installation and heating-system-upgrade model, not a second like-for-like replacement calculator. Property area adds only a modest system-sizing component to an upgrade-oriented project allowance. Project type drives conversion, relocation, or major-upgrade scope; boiler type, system scale, and selected fixed upgrades remain explicit.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £5 | £10 | £20 | per m² |
Adjustments / add-ons: Project type, Boiler, Property / system scale, Smart controls, Magnetic filter, Power flush, Additional radiator work, Hot-water-cylinder work, Gas / pipework modifications
HomeCostNest planning assumptions: For normal like-for-like boiler replacement, use the Furnace Replacement route's UK Boiler Replacement mode. This model covers first installation, boiler-type change, conversion, relocation, or wider boiler-based heating upgrades. Hot-water-cylinder work is excluded unless selected and remains separate in the breakdown.
Source reference
Current Checkatrade 2026 boiler installation and system-conversion guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Door Replacement Cost CalculatorUS · UK
United States
USD · doors · The selected installed door-type range is multiplied by door count, so internal, exterior, premium and patio/French openings remain meaningfully different. Per-door frame, disposal, hardware and finishing work scale only when selected. Structural opening work remains a fixed project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Exterior / front door | $500 | $1,200 | $2,500 | per doors |
| Interior door | $200 | $450 | $800 | per doors |
| Patio / French door opening | $800 | $1,800 | $3,500 | per doors |
| Premium / custom exterior | $1,000 | $2,500 | $5,000 | per doors |
Adjustments / add-ons: Material / specification, Installation, Old door removal / disposal, New frame / jamb for each door, Hardware / lockset for each door, Painting / finishing for each door, Structural header / opening allowance
HomeCostNest planning assumptions: Installed ranges assume normal residential products and labour in an existing property. Window replacement is not included. Exceptional structural, masonry, waterproofing, access-control and historic-property work require separate quotations.
Source reference
Angi
Door Installation / Replacement Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · doors · Door count multiplies native UK installed rates for internal, external, composite and French/patio door types; supply-only prices are not presented as installed totals. Per-door frames, disposal, ironmongery and finishing scale only when selected, while structural opening work remains fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| External / front door | £500 | £900 | £1,500 | per doors |
| Internal door | £150 | £300 | £500 | per doors |
| Composite / higher-spec front door | £800 | £1,200 | £2,100 | per doors |
| French / patio door opening | £900 | £1,500 | £2,600 | per doors |
Adjustments / add-ons: Material / specification, Installation, Old door disposal, New frame for each door, Ironmongery / hardware for each door, Finishing for each door, Structural opening allowance
HomeCostNest planning assumptions: The selected rate includes normal fitting in an existing residential property. Windows are excluded. Listed-property work, unusual masonry, access control and major structural changes require separate quotations.
Source reference
Current Checkatrade UK door installation and replacement cost guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Gutter Replacement Cost CalculatorUS · UK
United States
USD · linear ft · The selected installed material rate is multiplied by gutter length without adding a duplicate generic base rate. Height, style and roofline complexity adjust the installed subtotal. Removal and guards scale with length, while downspouts and limited fascia repair remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Aluminum | $6 | $10 | $15 | per linear ft |
| Vinyl | $4 | $7 | $10 | per linear ft |
| Steel | $8 | $13 | $20 | per linear ft |
| Copper | $20 | $30 | $42 | per linear ft |
Adjustments / add-ons: Home height, Gutter style, Installation complexity, Old gutter removal, Gutter guards, Downspout allowance, Limited fascia repair allowance
HomeCostNest planning assumptions: Complete fascia and soffit replacement is excluded. Downspout quantity and drainage discharge requirements should be confirmed on site. Historic details, unusual roof access and major structural repairs require separate quotations.
Source reference
Current Angi 2026 gutter installation and replacement guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · metres · Native UK installed material rates are multiplied by guttering length without a duplicate base rate. Property height and roofline adjust the installed subtotal. Removal and guards scale per metre, while downpipes, fascia repair and scaffolding remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| uPVC | £30 | £45 | £60 | per metres |
| Aluminium | £40 | £60 | £80 | per metres |
| Cast iron / premium metal | £55 | £80 | £115 | per metres |
Adjustments / add-ons: Property height, Roofline, Old guttering removal, Gutter guards, Downpipe allowance, Limited fascia repair allowance, Scaffolding / access allowance
HomeCostNest planning assumptions: Complete fascia or soffit replacement is not included. Downpipe layout and drainage discharge should be confirmed on site. Scaffolding is a project allowance and does not scale automatically with every metre.
Source reference
Current Checkatrade UK guttering replacement and installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Garage Door Replacement Cost CalculatorUS · UK
United States
USD · doors · Installed garage-door pricing is driven by door size/type and multiplied by door count. Material, insulation and specification adjust that installed subtotal. Openers, removal and tracks scale per door; structural opening repair and electrical supply remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Single garage door | $750 | $1,500 | $2,500 | per doors |
| Double garage door | $1,200 | $2,300 | $3,800 | per doors |
| Custom / oversized | $1,800 | $3,500 | $6,000 | per doors |
Adjustments / add-ons: Material, Insulation, Style / specification, Garage-door opener for each door, Old door removal / disposal, Track / hardware replacement, Structural opening repair allowance, Electrical supply work allowance
HomeCostNest planning assumptions: Normal installation in a serviceable residential garage opening is included. Major structural opening changes are excluded unless separately quoted. Garage construction and conversion work are outside this calculator.
Source reference
Angi
Garage Door Installation and Replacement Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · doors · Native UK installed ranges are selected by garage-door mechanism and multiplied by door count. Double size and electric operation increase the installed subtotal. Removal, frame work and automation scale per door; electrical supply and structural repair remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Up-and-over | £700 | £1,100 | £1,500 | per doors |
| Sectional | £1,000 | £1,500 | £2,200 | per doors |
| Roller | £1,000 | £1,600 | £2,500 | per doors |
| Side-hinged / premium | £1,300 | £2,200 | £3,500 | per doors |
Adjustments / add-ons: Door size, Operation, Old door removal, Frame work for each door, Automation upgrade for each door, Electrical supply allowance, Structural opening repair allowance
HomeCostNest planning assumptions: Prices represent installed projects, not supply-only doors. Normal fitting in an existing serviceable opening is included. Major masonry or structural alteration requires a separate quotation.
Source reference
Current Checkatrade UK garage door installation and replacement guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Skylight Installation Cost CalculatorUS · UK
United States
USD · skylights · The selected installed skylight rate is multiplied by unit count. Roof complexity adjusts the installed subtotal. New-opening work, interior finishing, controls and blinds scale per skylight where appropriate, while additional project framing remains fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Fixed | $900 | $1,500 | $2,500 | per skylights |
| Manual vented | $1,200 | $2,000 | $3,500 | per skylights |
| Electric / solar vented | $1,800 | $3,000 | $5,000 | per skylights |
| Premium / custom | $2,200 | $3,800 | $6,500 | per skylights |
Adjustments / add-ons: Roof type, Installation, Interior shaft / drywall finishing, Electrical controls / wiring, Blinds / shades, Additional structural framing allowance
HomeCostNest planning assumptions: Normal unit installation and immediate flashing are represented by installed ranges. Whole-roof replacement is excluded. Major structural redesign, water-damage remediation and unusual access require separate quotations.
Source reference
Angi
Skylight Installation and Replacement Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · roof windows · Native UK installed roof-window ranges are multiplied by quantity. Roof covering and access adjust the installed subtotal. Opening work, internal finishing, controls and blinds scale per unit where appropriate; scaffolding remains one fixed project allowance.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Standard fixed / basic | £600 | £900 | £1,300 | per roof windows |
| Opening roof window | £800 | £1,200 | £1,800 | per roof windows |
| Electric / premium | £1,200 | £1,800 | £2,500 | per roof windows |
Adjustments / add-ons: Roof covering / access, Installation, Internal finishing, Electrical controls, Blinds, Scaffolding / access allowance
HomeCostNest planning assumptions: Installed pricing includes normal fitting and immediate weatherproofing. Whole-roof replacement is excluded. Scaffolding is project-level and does not multiply by roof-window count.
Source reference
Current Checkatrade UK roof-window and skylight installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Chimney Repair Cost CalculatorUS · UK
United States
USD · scope factor · Repair type supplies the principal project range. A tightly limited 1–1.5 scope factor provides only modest size variation, avoiding aggressive multiplication by height or area. Condition and access adjust the repair subtotal; inspection, waterproofing, cap, flashing and lift remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $0 | $0 | $0 | per scope factor |
Adjustments / add-ons: Repair type, Chimney condition, Access, Inspection allowance, Waterproofing allowance, Chimney cap allowance, Flashing work allowance, Scaffolding / lift allowance
HomeCostNest planning assumptions: The calculator covers repair of one existing residential chimney. Complete chimney construction, fireplace replacement and routine sweeping are excluded. Hidden structural damage and code-mandated reconstruction require site-specific quotations.
Source reference
Angi
Chimney Repair Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · scope factor · Native UK repair-type ranges drive the estimate. A tightly limited 1–1.5 scope factor allows modest variation without multiplying an entire stack project aggressively. Condition and access adjust the subtotal; survey, waterproofing, pot/cowl, leadwork and scaffolding remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £0 | £0 | £0 | per scope factor |
Adjustments / add-ons: Chimney-stack repair, Condition, Access, Survey / inspection allowance, Waterproofing allowance, Chimney pot / cowl allowance, Lead flashing allowance, Scaffolding allowance
HomeCostNest planning assumptions: The estimate covers repair of one existing residential chimney stack. Full new chimney construction, fireplace work and routine sweeping are excluded. Scaffolding is a project allowance and is not multiplied by chimney dimensions.
Source reference
Current Checkatrade UK chimney repair and repointing guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Fireplace Installation Cost CalculatorUS · UK
United States
USD · fireplaces · Fireplace type defines the installed per-unit range, which is multiplied by fireplace count without adding a duplicate generic baseline. Installation and vent/flue work scale per fireplace. Finish adjusts the installed subtotal, while utilities, hearth, permits, framing and optional complete chimney construction remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Electric fireplace | $500 | $1,200 | $2,500 | per fireplaces |
| Gas fireplace | $2,000 | $4,500 | $8,000 | per fireplaces |
| Wood-burning fireplace / stove | $2,500 | $5,000 | $10,000 | per fireplaces |
| Custom masonry fireplace | $5,000 | $10,000 | $20,000 | per fireplaces |
Adjustments / add-ons: Installation, Venting / flue, Finish, Gas-line extension allowance, Electrical circuit allowance, Hearth / surround upgrade allowance, Permit allowance, Structural / framing allowance, Complete new masonry chimney allowance
HomeCostNest planning assumptions: Existing openings, utility capacity and venting must be confirmed by a qualified installer. Complete new masonry chimney construction is excluded unless its separate allowance is selected. Existing chimney repair, sweeping and whole-home heating replacement are excluded.
Source reference
Angi
Fireplace Installation Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · fireplaces · Native UK installed ranges are selected by fire type and multiplied by fireplace count. Opening and flue work scale per unit where repeated. Finish adjusts the installed subtotal, while liner, hearth, surround, utility and structural work remain fixed project allowances. Complete chimney reconstruction is not automatic.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Electric fire | £400 | £900 | £1,800 | per fireplaces |
| Gas fire | £1,000 | £2,000 | £3,500 | per fireplaces |
| Wood-burning stove / fire | £1,500 | £2,500 | £4,500 | per fireplaces |
| Premium / custom fireplace | £2,500 | £4,500 | £8,000 | per fireplaces |
Adjustments / add-ons: Installation, Flue / chimney, Finish, Chimney liner project allowance, Hearth allowance, Fireplace surround allowance, Gas connection allowance, Electrical work allowance, Structural opening work allowance
HomeCostNest planning assumptions: Gas-fire work must be completed by an appropriately Gas Safe registered engineer. Solid-fuel installations must comply with applicable Building Regulations and competent-person requirements such as HETAS where applicable. Existing chimney repair, sweeping and complete chimney reconstruction are excluded.
Source reference
Current Checkatrade UK fireplace, log-burner and gas-fire installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Septic System Cost CalculatorUS · UK
United States
USD · bedrooms · Bedroom count contributes only a modest sizing allowance. Project scope supplies the dominant tank-only, complete-system, drain-field or complex-system cost. System type, soil and excavation adjust the subtotal; tests, permits, engineering, removal and restoration remain fixed. Select the separate drain-field allowance only when it is not already represented by scope.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Tank replacement only | $1,800 | $3,000 | $4,500 | per bedrooms |
| Standard complete system | $3,200 | $6,900 | $11,100 | per bedrooms |
| Complete system + new drain field | $5,000 | $9,500 | $15,000 | per bedrooms |
| Complex / alternative system | $7,000 | $12,500 | $19,000 | per bedrooms |
Adjustments / add-ons: System type, Tank material, Soil / site, Excavation / access, Soil / percolation test allowance, Permit allowance, Engineering / design allowance, Old tank removal allowance, Landscaping restoration allowance, Separate drain-field replacement allowance
HomeCostNest planning assumptions: Tank-only pricing is not presented as a complete septic-system total. System design and capacity must be confirmed through site evaluation and local requirements. Environmental, permit and setback requirements vary by jurisdiction; confirm with the relevant authority and qualified installer.
Source reference
Angi
Septic Tank and System Installation Cost, current 2026 guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · bedrooms · Bedroom count adds only a modest native UK sizing allowance. Scope supplies the dominant replacement, complete drainage-field or complex private-drainage cost. System type, ground and excavation adjust the subtotal; surveys, testing, consents, removal, reinstatement and electrical connection remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Tank replacement / simple installation | £2,700 | £4,050 | £5,750 | per bedrooms |
| Complete system with drainage field | £4,700 | £7,550 | £11,250 | per bedrooms |
| Complex replacement / new drainage | £6,700 | £9,550 | £14,250 | per bedrooms |
Adjustments / add-ons: Private drainage system, Ground conditions, Access / excavation, Site survey allowance, Drainage / percolation testing allowance, Consent / application allowance, Old tank removal allowance, Landscaping reinstatement allowance, Treatment-plant electrical connection
HomeCostNest planning assumptions: A septic tank normally requires a compliant drainage field rather than direct discharge to a watercourse. Requirements vary by site and jurisdiction; confirm with the relevant authority/qualified installer. The estimate does not guarantee planning, Building Regulations or environmental compliance.
Source reference
Current Checkatrade and UK private-drainage and septic-tank installation guidance
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Sewer Line Replacement Cost CalculatorUS · UK
United States
USD · linear ft · The selected installed repair method supplies the per-foot range and is multiplied by affected length. Depth, surface and condition adjust that subtotal. Camera inspection, permits, cleanout work and restoration remain fixed project allowances rather than scaling with every foot.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $0 | $0 | $0 | per linear ft |
Adjustments / add-ons: Repair / replacement method, Pipe access / depth, Surface, Pipe condition, Camera inspection allowance, Permit allowance, Cleanout installation allowance, Yard / landscape restoration allowance, Driveway / concrete restoration allowance
HomeCostNest planning assumptions: Rates are planning ranges; actual method suitability requires inspection. Interior water-supply repiping, septic-system work and major sewage cleanup are excluded. Utility-owned network work and responsibility boundaries must be confirmed locally.
Source reference
Angi
Sewer Line Replacement Cost [2026 Data], updated August 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · metres · Native UK installed method rates are multiplied by affected private-drain length. Depth, surface disruption and condition adjust the subtotal. CCTV survey, setup, manhole work, reinstatement and waste removal remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £0 | £0 | £0 | per metres |
Adjustments / add-ons: Repair / replacement method, Depth / access, Surface disruption, Pipe condition, CCTV drain survey allowance, Excavation setup allowance, Manhole work allowance, Surface reinstatement allowance, Waste removal allowance
HomeCostNest planning assumptions: Rates are conservative planning ranges and are not universal contractor rates. Public-sewer and private-property responsibility varies by ownership and location; confirm responsibility before work. This calculator excludes utility-company network replacement, interior plumbing and septic systems.
Source reference
Current UK drain repair and replacement guidance consistent with Checkatrade methodology
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Drainage System Cost CalculatorUS · UK
United States
USD · linear ft · System type defines either an installed per-foot range or, for a dry well, a whole-project range that is not multiplied by length. Soil, excavation and site disruption adjust the subtotal. Preparation, permits, pumps, restoration and design remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $0 | $0 | $0 | per linear ft |
Adjustments / add-ons: Drainage system, Soil, Excavation, Site conditions, Site preparation allowance, Permit allowance, Sump pump allowance, Landscaping restoration allowance, Inspection / design allowance
HomeCostNest planning assumptions: System suitability depends on soil, grading, discharge route and site layout. Foundation repair, sewer-line work, septic systems and roof gutters are excluded. Permitting and drainage requirements must be confirmed locally.
Source reference
Angi
Yard Drainage Cost [2026 Data], updated September 2026
Source reference
Angi French Drain Cost 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · metres · French drains and channels use native installed per-metre ranges. Rubble and crate soakaways use whole-project ranges and are not multiplied by drainage length. Ground, access and surface adjust the subtotal; tests, setup, waste, restoration and connections remain fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £0 | £0 | £0 | per metres |
Adjustments / add-ons: Garden drainage system, Ground, Access, Surface, Percolation test allowance, Mini-digger / setup allowance, Waste removal allowance, Landscaping restoration allowance, Additional drainage connection allowance
HomeCostNest planning assumptions: System suitability depends on soil, site layout, levels and the available drainage route. Planning, Building Regulations and environmental requirements vary; confirm them for the site. Sewer, septic, gutter and structural foundation work are excluded.
Source reference
Checkatrade
Garden Drainage System Cost Breakdown 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Retaining Wall Cost CalculatorUS · UK
United States
USD · sq ft · The selected installed material rate is multiplied by wall area, accounting for both height and length. Structural demand, slope and ground adjust the subtotal. Waterproofing scales with wall area; engineering, permits, setup, drainage and delivery remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Timber | $15 | $23 | $30 | per sq ft |
| Concrete / block | $20 | $40 | $60 | per sq ft |
| Natural stone | $35 | $55 | $85 | per sq ft |
| Reinforced / structural | $40 | $65 | $100 | per sq ft |
Adjustments / add-ons: Wall height / structural demand, Site / slope, Ground, Structural engineering allowance, Permit allowance, Excavation setup allowance, Wall drainage system allowance, Waterproofing membrane, Material delivery allowance
HomeCostNest planning assumptions: This is a planning estimate, not structural design. Tall, high-load or safety-critical walls may require engineering and permits. Final foundations, reinforcement and drainage must be designed for actual soil and loads.
Source reference
Angi
Retaining Wall Cost [2026 Data], updated September 15 2026
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Native UK installed material rates are multiplied by wall area. Structural demand, slope and ground adjust the subtotal. Waterproof/DPM membrane scales by wall area. Drainage remains a conservative fixed project allowance because its £/linear-metre basis must not be treated as £/m².
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Timber sleeper | £200 | £245 | £300 | per m² |
| Gabion | £195 | £240 | £295 | per m² |
| Concrete | £240 | £285 | £350 | per m² |
| Masonry / reinforced block | £270 | £320 | £400 | per m² |
| Stone | £320 | £395 | £520 | per m² |
Adjustments / add-ons: Structural demand, Site / slope, Ground, Structural engineer allowance, Excavation / setup allowance, Access equipment allowance, Fixed wall drainage allowance, Waterproof / DPM membrane
HomeCostNest planning assumptions: This calculator is a planning estimate and not structural design. Tall, high-load or boundary-sensitive walls may require engineering, approvals and specialist foundations. Drainage length, reinforcement and ground design must be confirmed for the site.
Source reference
Checkatrade
Retaining Wall Installation Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Tile Installation Cost CalculatorUS · UK
United States
USD · sq ft · The ceramic installed rate is the area-based baseline. Material differences, removal and waterproofing are native per-square-foot adjustments. Application and pattern complexity adjust the tile subtotal; substrate work is separately area-based, and trim and access remain project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Ceramic | $0 | $0 | $0 | per sq ft |
| Porcelain | $2 | $3 | $7 | per sq ft |
| Natural stone | $7 | $13 | $22 | per sq ft |
| Premium / specialty | $10 | $18 | $32 | per sq ft |
Adjustments / add-ons: Application, Pattern / layout, Substrate condition, Remove existing tile, Include wet-area waterproofing, Transitions / trim allowance, Difficult access allowance
HomeCostNest planning assumptions: Significant substrate work already includes the backer-board allowance; do not add separate backer-board work again. This is an installed planning estimate, not a quote for structural repairs, plumbing relocation, mould remediation, or major demolition.
Source reference
Angi
Tile Installation Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · The ceramic installed rate is the native UK m² baseline. Material differences, removal, and tanking scale with tile area. Application and pattern complexity adjust the tile subtotal; surface preparation is area-based while trim and access are fixed planning allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Ceramic | £0 | £0 | £0 | per m² |
| Porcelain | £10 | £15 | £20 | per m² |
| Natural stone | £25 | £35 | £55 | per m² |
| Premium / large format | £35 | £50 | £75 | per m² |
Adjustments / add-ons: Application, Pattern, Surface condition, Remove old tile, Include waterproofing / tanking, Trim allowance, Difficult access allowance
HomeCostNest planning assumptions: Significant surface preparation already represents backer-board work and should not be duplicated. The estimate is installed planning cost, not labour-only pricing or a tile retail-price comparison.
Source reference
Checkatrade
Tiling Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Countertop Replacement Cost CalculatorUS · UK
United States
USD · sq ft · The laminate installed rate is the area-based baseline; each material is a native per-square-foot difference from that baseline, avoiding duplicate material pricing. Edge and layout adjust the material subtotal. Removal scales with area, while cut-outs, splashback, plumbing and reinforcement are fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Laminate | $0 | $0 | $0 | per sq ft |
| Solid surface | $20 | $25 | $30 | per sq ft |
| Granite | $20 | $35 | $45 | per sq ft |
| Quartz | $30 | $45 | $65 | per sq ft |
| Marble / premium stone | $40 | $65 | $95 | per sq ft |
Adjustments / add-ons: Edge profile, Layout, Remove old countertop, Sink cut-out, Cooktop cut-out, Backsplash allowance, Plumbing disconnect / reconnect, Cabinet reinforcement
HomeCostNest planning assumptions: Cabinet replacement, kitchen units, appliances and a complete kitchen renovation are excluded. Template, fabrication and installation requirements vary by material and layout; use this as a planning range before obtaining measured quotes.
Source reference
Angi
Countertop Installation and Replacement Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · The laminate installed worktop rate is the native UK m² baseline; material choices are per-m² differences, so slab pricing is not added twice. Edge profile and layout adjust the material subtotal. Old-worktop removal scales with area while cut-outs, upstand, plumbing and reinforcement remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Laminate | £0 | £0 | £0 | per m² |
| Solid wood | £40 | £60 | £70 | per m² |
| Solid surface | £100 | £130 | £170 | per m² |
| Granite | £170 | £230 | £320 | per m² |
| Quartz | £200 | £280 | £370 | per m² |
| Premium stone | £270 | £380 | £520 | per m² |
Adjustments / add-ons: Edge / profile, Layout, Remove old worktop, Sink cut-out, Hob cut-out, Upstand / splashback allowance, Plumbing disconnect / reconnect, Cabinet reinforcement
HomeCostNest planning assumptions: Kitchen units/cabinets, appliances and a complete kitchen refurbishment are excluded. This is installed planning pricing, not a labour-only or worktop-retail estimate.
Source reference
Checkatrade
Kitchen Worktop Installation Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Kitchen Cabinet Replacement Cost CalculatorUS · UK
United States
USD · linear ft · Stock cabinet installation is the per-linear-foot baseline. Semi-custom and custom choices add only the difference needed to reach their installed ranges, avoiding duplicate cabinet pricing. Finish and layout adjust the cabinet subtotal; removal, hardware, and trim scale with length while accessories, wall repair, and minor service adjustments remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $150 | $250 | $400 | per linear ft |
Adjustments / add-ons: Cabinet level, Material / finish, Layout, Remove old cabinets, Handles / hardware, Crown / trim, Interior accessories allowance, Minor wall repair allowance, Minor plumbing / electrical adjustment
HomeCostNest planning assumptions: Countertops, appliances, flooring, and complete kitchen renovation are excluded. Only minor plumbing or electrical adjustment is represented; major relocation or layout work belongs in a kitchen remodel estimate.
Source reference
Angi
Kitchen Cabinet Installation and Replacement Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · linear metres · Budget flat-pack unit installation is the native UK per-linear-metre baseline. Mid-range and bespoke selections add the difference needed to reach their installed ranges. Finish and layout adjust the unit subtotal; removal, handles, and trim scale with unit length while accessories, making-good, and minor service work remain fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £250 | £400 | £600 | per linear metres |
Adjustments / add-ons: Unit specification, Finish, Layout, Remove old kitchen units, Handles / hardware, Cornice / plinth / trim, Internal storage accessories allowance, Making-good allowance, Minor plumbing / electrical adjustment
HomeCostNest planning assumptions: Worktops, appliances, flooring, and a full kitchen refurbishment are excluded. Pricing represents installed planning costs rather than unit-supply-only retail pricing; major service relocation is excluded.
Source reference
Checkatrade
Kitchen Fitting and Kitchen Unit Installation Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Demolition Cost CalculatorUS · UK
United States
USD · sq ft · Interior demolition is the area-based baseline. Garage/outbuilding and whole-structure choices add only the per-square-foot difference needed to reach their scope ranges. Construction, access, and disposal adjust the demolition subtotal; permits, utility disconnection, protection, foundation removal, grading, and survey remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Interior demolition | $0 | $0 | $0 | per sq ft |
| Garage / outbuilding | $2 | $2 | $4 | per sq ft |
| Whole structure | $3 | $5 | $7 | per sq ft |
Adjustments / add-ons: Construction, Access, Disposal, Permit allowance, Utility disconnect allowance, Site protection allowance, Foundation removal allowance, Site grading allowance, Hazardous-material survey allowance
HomeCostNest planning assumptions: Hazardous-material survey is an optional assessment allowance only; asbestos, lead, mould, and other remediation are excluded. Reconstruction, renovation, salvage credits, and unusual environmental remediation are excluded.
Source reference
Angi
Residential Demolition Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Internal strip-out is the native UK per-m² baseline. Outbuilding and structural-demolition selections add the difference required to reach their scope ranges. Construction, access, and waste adjust the subtotal; surveys, disconnections, setup, foundation removal, clearance, and scaffolding remain fixed.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Internal strip-out | £0 | £0 | £0 | per m² |
| Garage / outbuilding | £20 | £30 | £40 | per m² |
| House / structural demolition | £50 | £70 | £100 | per m² |
Adjustments / add-ons: Construction, Access, Waste, Pre-demolition survey allowance, Utility disconnection allowance, Skip / waste setup allowance, Foundation removal allowance, Site clearance / levelling allowance, Scaffolding / access setup allowance
HomeCostNest planning assumptions: The survey allowance does not include asbestos or other hazardous-material removal; specialist assessment and remediation remain separate. Rebuilding, renovation, salvage credits, and exceptional environmental work are excluded.
Source reference
Checkatrade
Demolition Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Landscaping Cost CalculatorUS · UK
United States
USD · sq ft · A basic softscape refresh is the area-based baseline. Standard and premium project levels add only the difference required to reach their per-square-foot ranges. Site preparation, planting, and terrain adjust the landscaping subtotal. Sod scales with area; irrigation, trees and shrubs, design, and cleanup remain project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $4 | $6 | $8 | per sq ft |
Adjustments / add-ons: Project level, Site condition, Planting level, Terrain, Include sod / lawn installation, Irrigation setup allowance, Tree / shrub package allowance, Landscape design consultation, Site cleanup allowance
HomeCostNest planning assumptions: The baseline covers general softscape work and does not include complete patio, deck, fence, retaining-wall, or major drainage projects. Pools, outdoor structures, major earthworks, and specialist arborist work are excluded.
Source reference
Angi
Landscaping Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · A basic garden refresh is the native UK area-based baseline. Standard and premium project levels add the difference required to reach their per-m² ranges. Ground, planting, and access adjust the subtotal. Turf scales with garden area; plants, design, clearance, and irrigation remain fixed project allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £30 | £45 | £60 | per m² |
Adjustments / add-ons: Project level, Ground condition, Planting level, Access, Include turf installation, Plant / shrub package allowance, Garden design allowance, Waste / clearance allowance, Irrigation setup allowance
HomeCostNest planning assumptions: The baseline covers general soft landscaping and excludes complete patios, decking, fencing, retaining walls, and major garden drainage systems. Pools, garden buildings, major earthworks, and specialist tree surgery are excluded.
Source reference
Checkatrade
Garden Landscaping Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Swimming Pool Installation Cost CalculatorUS · UK
United States
USD · sq ft · Pool type establishes the main whole-project installed range. A deliberately modest per-square-foot size allowance changes that baseline with the entered surface area without multiplying the full project cost by area. Site, access, and specification adjust the subtotal; equipment and restoration choices remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Above-ground | $1,550 | $4,100 | $8,650 | installed system / project range |
| Inground vinyl | $24,550 | $39,100 | $53,650 | installed system / project range |
| Inground fiberglass | $34,550 | $49,100 | $68,650 | installed system / project range |
| Inground concrete / gunite | $49,550 | $74,100 | $98,650 | installed system / project range |
Adjustments / add-ons: Area-related size allowance, Site condition, Access, Finish / specification, Pool heater allowance, Upgraded pump / filter allowance, Pool lighting allowance, Automation allowance, Safety cover allowance, Pool safety fencing allowance, Landscaping restoration allowance, Limited pool-edge deck / patio allowance
HomeCostNest planning assumptions: Major landscaping, retaining walls, complete patios or decks, and complete perimeter-fence projects are excluded. Large custom or luxury pools can exceed the displayed range. Local permit, barrier, utility, and site requirements must be confirmed.
Source reference
Angi
Swimming Pool Installation Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Pool type establishes the native UK whole-project installed range. A modest per-m² size allowance responds to entered pool area without multiplying the complete pool project cost by area. Ground, access, and specification adjust the subtotal; heating, filtration, lighting, cover, controls, and reinstatement remain fixed allowances.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Above-ground | £1,600 | £4,200 | £8,800 | installed system / project range |
| Liner inground | £24,600 | £39,200 | £58,800 | installed system / project range |
| Fibreglass | £29,600 | £44,200 | £63,800 | installed system / project range |
| Concrete / premium inground | £44,600 | £69,200 | £98,800 | installed system / project range |
Adjustments / add-ons: Area-related size allowance, Ground condition, Access, Specification, Pool heating allowance, Filtration upgrade allowance, Pool lighting allowance, Automatic cover allowance, Controls / automation allowance, Landscaping reinstatement allowance
HomeCostNest planning assumptions: Pool houses, major patios, retaining walls, full garden redesign, and complete fencing projects are excluded. Planning permission, Building Regulations, safety, drainage, and site requirements vary; confirm the requirements for the property.
Source reference
Checkatrade
Swimming Pool Installation Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Whole House Renovation Cost CalculatorUS · UK
United States
USD · sq ft · Home area is multiplied by the selected whole-renovation level. Mid-range and major choices add only the per-square-foot difference from the light baseline, preventing the renovation rate from being counted twice. Condition, finish, and structural scope adjust that integrated project subtotal. Optional system fields are conservative incremental allowances only for exceptional work beyond the chosen renovation level; they are not full standalone calculator totals.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | $15 | $30 | $50 | per sq ft |
Adjustments / add-ons: Renovation level, Home condition, Finish level, Structural scope, Exceptional major roof-work allowance, Exceptional full-rewiring allowance, Exceptional whole-home plumbing allowance, Exceptional HVAC replacement allowance, Exceptional window-package allowance, Exceptional foundation / structural allowance
HomeCostNest planning assumptions: The estimate applies to renovation of existing home area and excludes new additions, garages, pools, and major landscaping. The selected renovation level already represents overlapping general labour, overhead, rooms, finishes, and systems; do not select exceptional allowances for work already adequately represented in that level.
Source reference
Angi
Whole House Renovation and Remodeling Cost (2026 Data)
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
United Kingdom
GBP · m² · Existing-home area is multiplied by the selected native UK renovation level. Mid-range and major choices add only the per-m² difference from the light baseline. Property condition, specification, and structural scope adjust that integrated subtotal. Optional system fields are limited incremental allowances for exceptional work beyond the selected level, not complete standalone project prices.
| Benchmark | Low | Typical | High | Basis |
|---|---|---|---|---|
| Primary benchmark | £300 | £500 | £700 | per m² |
Adjustments / add-ons: Renovation level, Property condition, Specification, Structural scope, Exceptional major roof-work allowance, Exceptional full-rewiring allowance, Exceptional plumbing-replacement allowance, Exceptional heating-system allowance, Exceptional window-replacement allowance, Exceptional structural / foundation allowance
HomeCostNest planning assumptions: House extensions, new-space loft conversions, garage construction, swimming pools, and major landscaping are excluded. The renovation level already combines overlapping labour, overhead, rooms, finishes, and normal systems work; exceptional allowances should be selected only for additional major scope.
Source reference
Checkatrade
House Renovation Cost Guide
Source references provide benchmark context. HomeCostNest applies its own calculator structure, ranges, assumptions, and allowances; listing a source does not imply endorsement of HomeCostNest or verification of every calculated price.
No source URL is stored in this calculator's current data record; no link has been inferred or fabricated.
- Review date:
- September 2026
Corrections and editorial standards
Read the Editorial Policy and Corrections for attribution, correction, professional-advice, and advertising-separation commitments. To report a possible error, email memoravirtual@gmail.com or use the contact page.