How sources are used
We use official statistics to monitor construction price movement and recent UK cost guides to set practical planning benchmarks. Calculator outputs then apply the assumptions described in our methodology, including regional adjustments where relevant.
Construction output price indices
Published / checked: 13 August 2026
Used for: Construction price trend and update checks
House Extension: Cost Breakdown 2026
Published / checked: June 2026
Used for: Extension cost-per-m² benchmarks and common add-on costs
House Renovation: Cost Breakdown 2026
Published / checked: June 2026
Used for: Whole-house renovation benchmark and contingency guidance
Loft Conversion Cost: 2026 UK Price Guide & Breakdown
Published / checked: August 2026
Used for: Loft conversion type benchmarks
New Kitchen Cost 2026
Published / checked: March 2026
Used for: Kitchen units, worktops, appliances, fitting and total project benchmarks
How Much Does a New Bathroom Cost in the UK?
Published / checked: March 2026
Used for: Bathroom installation and renovation benchmarks
UK loft and cavity wall insulation cost guidance
Published / checked: Checked September 2026
Used for: Loft insulation property benchmarks and cavity wall per-m² costs
Electric Car Charger Installation Cost in 2026
Published / checked: 2026
Used for: Home EV charger installation benchmark and cost drivers
Changes to electric vehicle chargepoint grant schemes from 1 April 2026
Published / checked: Updated 7 July 2026
Used for: Current £500-per-socket maximum home and landlord EV chargepoint grant rules
Cost of Installing Laminate Flooring in 2026
Published / checked: June 2026 data
Used for: Laminate supply and fitting, removal and floor-levelling benchmarks
Painting and Decorating: Cost Breakdown 2026
Published / checked: June 2026
Used for: Room, whole-property, exterior painting and decorator day-rate benchmarks
Air Source Heat Pump Costs in the UK 2026
Published / checked: May 2026
Used for: Air-source heat pump equipment and installation benchmarks
Ground Source Heat Pump Cost: 2026 Price Guide
Published / checked: August 2026
Used for: Ground-source heat pump installation benchmarks
Boiler Upgrade Scheme — What you can get
Published / checked: Current at September 2026
Used for: Boiler Upgrade Scheme grant values
Boiler Upgrade Scheme — Overview and eligibility
Published / checked: Current at September 2026
Used for: England and Wales scheme coverage and eligibility notes
Roof Replacement: Cost Breakdown 2026
Published / checked: June 2026
Used for: Gable, hip and flat roof replacement ranges and cost-per-m² benchmarks
Double Glazing Costs in the UK in 2026
Published / checked: May 2026
Used for: Replacement window ranges by window type and whole-house double glazing benchmarks
How Much Does It Cost to Rewire a House in the UK?
Published / checked: June 2026
Used for: Full-house rewiring benchmarks by property size
New Boiler Costs in 2026: Prices & Installation
Published / checked: March 2026
Used for: Combi, system and conventional boiler supply-and-install benchmarks
Moving a Boiler: Cost Breakdown 2026
Published / checked: June 2026
Used for: Boiler relocation, controls, filters and pipework allowances
Solar Panel Installation: Cost Breakdown 2026
Published / checked: June 2026
Used for: 3–6 kW solar PV and battery storage benchmarks
Building a House: Cost Breakdown 2026
Published / checked: June 2026
Used for: New-build cost-per-m² and house-size benchmarks
Cost to Plaster a Room: Price Breakdown 2026
Published / checked: June 2026
Used for: Skim plastering, room and day-rate benchmarks
Driveway Costs in the UK (2026 prices)
Published / checked: April 2026
Used for: Gravel, tarmac, concrete, block paving and resin cost-per-m² benchmarks
Patio Laying: Cost Breakdown 2026
Published / checked: 2026
Used for: Patio cost-per-m², ground preparation and labour benchmarks
How Much Does a Garden Room Cost in 2026?
Published / checked: June 2026
Used for: Mini garden room, office pod, assembly, base and glazing benchmarks
Garage Conversion Cost 2026: UK Price Guide
Published / checked: May 2026
Used for: Garage conversion totals, cost-per-m² and conversion-type benchmarks
How Much Does a Conservatory Cost in the UK? 2026 Prices
Published / checked: June 2026
Used for: Lean-to, Victorian, Edwardian and orangery conservatory benchmarks
House Rendering: Cost Breakdown (UK) 2026
Published / checked: June 2026
Used for: Rendering cost-per-m² and property-size examples
Scaffolding Costs: Price Breakdown 2026 (UK)
Published / checked: February 2026
Used for: Scaffolding per-m², weekly and monthly hire benchmarks
Skip Hire Costs in the UK: Pricing Breakdown 2026
Published / checked: June 2026
Used for: Mini, midi and builder skip weekly hire ranges and permit allowances
How Much Does Cavity Wall Insulation Cost in 2026?
Published / checked: July 2026
Used for: Cavity wall insulation benchmarks by property type
Electrician Hourly Rates in the UK in 2026
Published / checked: May 2026
Used for: Electrician hourly, day and emergency rate benchmarks
Double Glazed Door Cost: Cost Breakdown 2026
Published / checked: June 2026
Used for: Front, French, patio and bifold double-glazed door benchmarks
External Wall Insulation Cost: 2026 UK Guide
Published / checked: July 2026
Used for: Installed external-wall insulation cost-per-m² and property-type ranges
Ready Mix Concrete: Cost Breakdown 2026
Published / checked: August 2026
Used for: Ready-mix concrete per-m³, delivery, pump hire and full-load benchmarks
Plasterboard Installation Cost: UK Breakdown 2026
Published / checked: June 2026
Used for: Plasterboard supply-and-fit rates for walls, ceilings, rooms and whole homes
Tradesperson Costs in 2026: Day & Hourly Rates UK
Published / checked: April 2026
Used for: Bricklayer, carpenter, roofer, tiler, kitchen fitter, labourer and landscaper rate benchmarks
Price updates
High-traffic guides are reviewed at least quarterly and whenever a major grant, tax, regulation or construction-price change materially affects a calculator. Production price records carry a source date and review date.