How to use these guides
Each guide gives a realistic UK price range, the factors that move it, the extras people forget and an estimator you can adjust for size, specification and region.
Use them to set a sensible budget before you ask for quotes. Then use our material calculators to check the quantities your builder prices.
Cost guides
House Extension Cost
Price per m² for single and double storey extensions, with an estimator.
Read the guide ›
Loft Conversion Cost
Velux, dormer, hip-to-gable and mansard compared.
Read the guide ›
New Kitchen Cost
Units, worktops, appliances and labour by budget level.
Read the guide ›
New Bathroom Cost
Basic to luxury, plus plumbing, tiling and labour.
Read the guide ›
New Roof Cost
Tiles, slate, flat roofs, scaffolding and strip-out.
Read the guide ›
House Rewire Cost
Full and partial rewires by house size.
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New Boiler Cost
Boiler swaps, new systems and radiators.
Read the guide ›
Driveway Cost
Block paving, resin, gravel, tarmac and concrete per m².
Read the guide ›
New Windows Cost
uPVC, aluminium and timber, supplied and fitted.
Read the guide ›
Garden Room Cost
Garden offices, outbuildings and annexes.
Read the guide ›
Why costs vary so much
- Region: London and the South East are commonly 20 to 35 percent above the national picture.
- Specification: finishes and fittings can double the price of the same job.
- Access and condition: old walls, awkward sites and hidden problems add time.
- Timing: busy periods and material price swings change quotes.
Always get several written, itemised quotes. Our survey cost calculator and new build cost tools cover other budgets.
Related guides and tools
These guides are general information only. Costs are indicative ranges drawn from published industry guides, not quotes, and vary by region, site and specification. Always get written quotes before committing to work.