Free · No sign-up · UK 2026
Renovation calculator
Itemised cost estimate for your English renovation — labour, materials, VAT and contingency, calibrated to UK 2026.
What are you renovating?
Select the type of work you're planning.
The other four tools.
All free. No sign-up. Same UK 2026 calibration as the calculator above — BCIS Q1 2026, FMB 2026, ONS Construction Output Price Indices.
Planning checker
Find out in plain English whether your project needs full planning permission, prior approval, or whether it's covered by permitted development — and where the limits sit for extensions, lofts, outbuildings and porches.
Grant finder
Tell us what you're doing and we'll show you which English schemes you could be eligible for — ECO4, Boiler Upgrade Scheme, Home Upgrade Grant, GBIS, Warm Homes Plan and the 0% VAT rate — with amounts and how to apply.
Quote sanity check
Drop in a builder's number and find out whether it sits in the fair range, looks high, or is suspiciously low — with the questions to ask before you sign anything. Includes AI line-by-line quote review.
Timeline planner
A realistic week-by-week schedule — design, planning, build, snagging — anchored to a start date you choose, so you can see the move-back-in week before the first invoice arrives.
Why this exists
We don’t sell quotes, chase leads, or take a cut. This site exists because most of what you need to know is already public — it’s just buried in council planning portals, scheme PDFs and trade-body reports.
Our job is to read all of that, model it against the nine English regions, and hand it back to you as one honest number, one clear answer, one realistic schedule. No account, no upsell, no follow-up calls.
5
free tools, end to end — no sign-up required
9
English regions covered — London to the North East
3
spec tiers per project — budget, mid-range, premium
Recently published
Long-form reading.
The tools give a number. The guides explain the reasoning, the hidden costs, and where the AI is and isn’t safe to trust.
Renovation cost · 14 min
How much does it cost to renovate a UK house in 2026?
Full breakdown by room, region and spec. BCIS Q1 2026 + FMB data, the eight hidden costs nobody quotes for, and the VAT treatment that catches 4 in 10.
Read the guideAI · 12 min
Can AI estimate a UK renovation cost from a property photo?
We tested Claude Sonnet 4.5 against a chartered UK quantity surveyor on a real Inner-London semi. Where AI is useful and where it falls apart.
Read the guideWhat’s next
More tools are being built.
A snag-list assistant for the final week, a permitted-development walk-through with photos, and a retrofit planner that ties EPC ratings to grant eligibility are next on the bench. They’ll appear here when they’re ready — never before.
On accuracy
Every estimate on this site is a starting point, not a quote. Local conditions, site access, ground conditions, contractor availability and the spec you choose will all move the final figure.
Always obtain at least three written quotes from qualified tradespeople before committing, and confirm planning and grant eligibility with the relevant local authority or scheme administrator.