What it covers
Free House Builder's Cost Guide; FMB-vetted contractor directory (no fixed prices).
What it costs
Editorial £/m² ranges by region; directory of vetted builders for bespoke quotes.
What changed recently
House Price Index Q1 2026 published; flags labour-rate softening as a 2026 trend after two years of inflation.
Where it fits in a UK knockdown rebuild
Use Federation of Master Builders (FMB) as one input among several when sizing a KDR. The calculator on this site cross-checks against BCIS, FMB, and HMRC simultaneously so no single reference drives the headline. For the live worked example, see the calculator; for every figure's primary source, see the sources ledger.
Primary source
Verified 2026-06-21 against the source URL above.