Cost guides
Know the numbers before the builder visits
Guides written from real job costs, with prices that update from the same engine as our estimator.
- New BuildHow Much Does It Cost to Build a House in the UK? Build Costs, Fees and Land ExplainedBuilding an 80m² single storey home at standard spec costs £121,500 to £145,000 at West Midlands rates, with fees included and no VAT. What is in that figure, how it changes by region, and how to think about land.8 min read
- ToolsUK Extension Cost Calculator: How Quoteio Works Out Your PriceQuoteio's free UK extension cost calculator prices a 20m² single storey rear extension at £54,000 to £62,000 at West Midlands rates. How the number is built, what it includes and what it leaves out.8 min read
- Loft ConversionHow Much Does a Loft Conversion Cost? 2026 UK Prices by TypeA two-room Velux loft conversion costs £34,500 to £40,500 and a rear dormer with an en-suite £48,500 to £56,500 at West Midlands rates, VAT and fees included. Hip to gable, mansard and regional prices too.10 min read
- ExtensionHow Much Does an Extension Cost in the UK? Every Type Priced for 2026A 20m² single storey rear extension costs £54,000 to £62,000 and a 40m² double storey £86,500 to £99,500 at West Midlands rates, VAT and fees included. All six extension types, sizes, specs and regions.11 min read
- Garage ConversionHow Much Does a Garage Conversion Cost in the UK? 2026 Prices by UseA standard single garage conversion costs £20,000 to £23,000 at West Midlands rates, including VAT, drawings and Building Regs. Prices for bedrooms, offices, en-suites and double garage annexes, plus every UK region.7 min read
- Decision guideHow Much to Convert a Loft, and Is It Cheaper Than Moving? (2026)Converting a loft costs £34,500 to £40,500 for a two room Velux and £48,500 to £56,500 for a dormer with an en-suite at West Midlands rates. Here is how that compares with the stamp duty, fees and price gap of moving.8 min read
- Loft ConversionWhat Does a Loft Room Cost? Plus the 4 Things That Push Up the PriceOne loft room costs £27,500 to £32,500 as a Velux conversion and £36,500 to £43,000 with a dormer at West Midlands rates, including VAT and fees. Why the same room can vary so much, and what a second room adds.7 min read
- ExtensionHow Much Does a Conservatory Cost in the UK? Orangery and Garden Room Prices for 2026A brick-built 14m² orangery-style conservatory with a roof lantern costs £50,000 to £57,500 at West Midlands rates, including VAT and fees. Prices by size, spec and region, and what drives the cost of a glazed conservatory.7 min read
- ExtensionHow Much Does a Kitchen Extension Cost in the UK? 2026 Prices by Size and SpecA 24m² kitchen extension with bifolds and a roof lantern costs £71,500 to £82,500 at West Midlands rates, VAT and fees included. Prices by size, spec and region from our live calculator.8 min read
- ExtensionHow Much Does a Single Storey Extension Cost in the UK? (2026 Guide)A standard 20m² single storey rear extension costs £54,000 to £62,000 at West Midlands rates, including VAT and fees. Full breakdown by trade, spec, size and region.9 min read
- MethodHow Quoteio prices a projectOur job data, the postcode index and how the range is set.
Costs by region
- RegionExtension costs in London (2026): real prices by postcode£71,000 to £88,500
- RegionExtension costs in the South East (2026): local prices by area£59,500 to £71,000
- RegionExtension costs in the East of England (2026): prices by area£57,000 to £68,000
- RegionExtension costs in the South West (2026): prices by area£55,500 to £66,000
- RegionExtension costs in the East Midlands (2026): prices by area£52,000 to £62,500
- RegionExtension costs in the West Midlands (2026): real local prices£54,000 to £62,000
- RegionExtension costs in the North West (2026): prices by area£52,000 to £62,500
- RegionExtension costs in Yorkshire (2026): prices by area£50,500 to £60,500
- RegionExtension costs in the North East (2026): prices by area£49,500 to £59,500
- RegionExtension costs in Wales (2026): prices by area£50,500 to £60,500
- RegionExtension costs in Scotland (2026): prices by area£52,500 to £63,000
- RegionExtension costs in Northern Ireland (2026): local prices£47,500 to £56,500