Estiquote UK Renovation Cost Index · September 2026
What home projects really cost in the UK
Typical 2026 prices for 17 of the most common home projects, including VAT, for a home outside London. Every figure is dated, sourced and free to use. Pick a project for regional prices, fees and a calculator.
| Project | Basis | Typical | Range |
|---|---|---|---|
| House extension | Single-storey rear · 25 m² | £71,000 | £63,500 to £78,000 |
| Loft conversion | Rear dormer · 30 m² | £52,500 | £47,000 to £58,000 |
| New kitchen | Supply and fit · medium | £12,500 | £9,000 to £16,000 |
| Bathroom | Full bathroom refit, same layout | £7,500 | £6,000 to £9,000 |
| Garage conversion | Integral or attached single garage | £17,400 | £14,400 to £20,500 |
| Whole-house renovation | Full renovation (rewire, heating, kitchen, bathroom, plaster) · 90 m² | £108,000 | £86,500 to £130,000 |
| New build house | Built by a main contractor · 140 m² | £364,000 | £322,000 to £406,000 |
| House rewire | 3-bed house | £6,300 | £5,400 to £7,200 |
| New consumer unit (fuse board) | Dual RCD board (Basic) | £680 | £550 to £800 |
| EV charger installation | 7 kW smart charger, standard installation | £1,100 | £850 to £1,300 |
| Electrical safety report (EICR) | 2 or 3-bed house | £200 | £150 to £250 |
| New roof | Pitched roof, semi-detached house | £12,300 | £10,500 to £14,000 |
| Knock-through with steel beam | 3 to 4 m | £4,200 | £3,000 to £5,400 |
| New boiler | Combi boiler, like-for-like swap | £2,900 | £2,500 to £3,200 |
| Unvented cylinder replacement | Unvented cylinder, like-for-like | £1,800 | £1,400 to £2,200 |
| Air source heat pump | 3-bed home (before £7,500 grant) | £13,500 | £12,000 to £15,000 |
| Replacement windows | 3-bed semi (about 10 windows) | £6,500 | £5,500 to £7,500 |
Regional price factors
Building costs vary mainly because labour costs vary. These factors are applied to building work; kitchens, bathrooms, boilers and windows use only part of the factor, because fitted products cost much the same everywhere.
| Region | Factor | Difference |
|---|---|---|
| UK average (outside London) | 1.00 | +0% |
| London | 1.35 | +35% |
| South East | 1.15 | +15% |
| East of England | 1.07 | +7% |
| South West | 1.04 | +4% |
| West Midlands | 0.97 | -3% |
| East Midlands | 0.95 | -5% |
| Scotland | 0.95 | -5% |
| North West | 0.93 | -7% |
| Yorkshire and the Humber | 0.92 | -8% |
| Wales | 0.90 | -10% |
| North East | 0.88 | -12% |
| Northern Ireland | 0.82 | -18% |
Which region is my town in? Brighton, Oxford and Southampton are in the South East; Cambridge and Norwich in the East of England; Bristol, Bath and Exeter in the South West; Birmingham and Coventry in the West Midlands; Nottingham and Leicester in the East Midlands; Glasgow and Edinburgh in Scotland; Manchester and Liverpool in the North West; Leeds, Sheffield and Hull in Yorkshire and the Humber; Cardiff and Swansea in Wales; Newcastle and Sunderland in the North East; and Belfast in Northern Ireland. Somewhere else? Type your postcode into the calculator and it says which region’s prices it uses.
New: what councils charge for building control
We compared building control fees at 91 councils in England and Wales. On current schedules the same small extension costs from £587 to £1,876 depending on where you live.
Prices near you
See local prices and your council’s own building control charges for 92 council areas in England and Wales (not every council yet), from Camden to Gwynedd. We have local pages for 92 council areas, but Winchester publishes only building notice charges, so the full plans figures cover 91.
Download and reuse the data
The full index is free to use with credit to Estiquote (Creative Commons BY 4.0). Journalists can find more on our press page.
- UK Renovation Cost Index 2026 Q3 (CSV), every project, finish and region
- Cost model (JSON), the rates and assumptions our calculator uses
- Building control fees by council (CSV)
How the index is built
Each range starts from published 2026 cost guides (Checkatrade, the Federation of Master Builders, Homebuilding & Renovating, Build It, MyJobQuote and MyBuilder), cross-checked where two or more agree and dated. We add VAT at the rate that applies, adjust for region, and show fees separately. Read the full method.