Builders Prices in England — How Much Does It Cost? (2026)
UK price ranges for builders, what affects costs, and expert tips to get the best deal.
Typical starting cost
£150/day
Prices vary by location, complexity, and provider. See the full breakdown below.
| Service | Typical Price | Unit | Notes |
|---|---|---|---|
| Day rate (skilled tradesperson) | £150–£300 | per day | — |
| Kitchen extension (medium) | £20,000–£40,000 | fixed | — |
| Loft conversion (dormer) | £35,000–£55,000 | fixed | — |
| Single-storey rear extension | £20,000–£35,000 | fixed | — |
| Full house renovation | £500–£1,200 | per m² | — |
| New build (per m²) | £1,500–£3,000 | per m² | — |
| Garage conversion | £8,000–£20,000 | fixed | — |
Regional price variation
Prices in London and the South East are typically 20–40% higher than the national average. Rates in the North of England, the Midlands, and Wales tend to be at the lower end of the ranges above.
What affects the cost of builders?
- Location (London/South East 30–50% premium)
- Specification and materials chosen
- Project size and complexity
- Planning permission requirements
- Structural engineer and architect fees
- VAT (20% on most building work)
How to get the best price for builders
- 1Get 3 quotes from FMB or NHBC registered builders
- 2Avoid cash-only contractors — get a contract and VAT invoice
- 3Use staged payments tied to project milestones
- 4Have detailed drawings ready before requesting quotes
- 5Build contingency of 10–20% into your budget
Builders prices by city
Frequently asked questions
How much does a house extension cost in the UK?
A single-storey rear extension typically costs £20,000–£35,000. A larger kitchen-diner extension can reach £40,000+. Costs vary significantly by location, specification, and size.
How much does a loft conversion cost?
A dormer loft conversion typically costs £35,000–£55,000. A simpler Velux conversion starts around £20,000–£30,000. London prices are typically 30–50% higher.
Should I get a contract with my builder?
Absolutely. Always get a written contract specifying scope, timeline, payment schedule, and what happens if costs overrun. The JCT Minor Works contract is a suitable template for smaller projects.
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