Refurbishment Cost Calculator

A grounded ballpark for a UK renovation — by floor area, scope, and the things that really move the number: who runs the job, whether it’s a period or listed building, the finish, and the region. Ranges are wide on purpose — real projects vary a lot.

Floor area to renovate

m²

Scope of work

Light / cosmeticRedecorate, flooring, minor updates£300–£700 / m²Medium refurbNew kitchen & bathroom, some rewiring/plastering£550–£1,100 / m²Full refurbishmentRewire, replumb, replaster, kitchen & bathrooms£700–£1,700 / m²Full refurb + extensionLayout changes, extension, major structural work£1,300–£2,600 / m²

Who's running the project? (the biggest cost lever)

Managing it yourself — and doing some jobs — is where the big savings are. A high-end firm on a larger job costs the most.

Building typeFinish qualityRegionAdd a 10% contingency (recommended)

Estimated cost

£58,900 – £143,100

90 m² · full refurbishment · £655–£1,590 / m² all-in

Base rate (scope): £700–£1,700 / m²
Who runs it: Self-managed ×0.85
Building type: Standard / modern ×1
Finish quality: Mid-range ×1
Region: Rest of UK ×1
Contingency: ×1.1
Midpoint estimate: £101,000

Indicative only, and wide by design — whole-house refurb costs run anywhere from ~£600 to £3,000+ / m². Self-managing (running your own trades) typically saves the main-contractor margin, which is why a careful project can land near the low end. Period and listed buildings carry real premiums (lime plaster, sash-window repair, Listed Building Consent); damp, structural or party-wall issues can move it further. Always get itemised quotes before committing.

Turn the estimate into a real budget

Refurbly breaks your renovation into rooms and jobs, tracks quotes vs actuals, and shows whether you’re on budget as the work happens — which is exactly how self-managing keeps costs at the low end.

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