How to Compare Builder Quotes in the UK

1. Why comparing only the final price is risky

When two builders quote different prices for the "same" job, they are almost never quoting for the same thing. One might include waste removal, scaffolding and a structural calculation; the other might leave all of it out. A cheaper headline figure with missing scope is not a cheaper job — it is the same job with the unknowns pushed onto you. The free Builder Quote Checklist and the Homeowner Quote Checker Pack walk through every item below in a printable format.

2. Check the scope of works

A good quote describes what is actually being done, room by room or task by task. Look for specifics: demolition, foundations, steelwork, first fix, second fix, plastering, decoration, making good. If a quote is one line and a total, you cannot compare it properly with another quote — and you cannot hold the builder to it later either.

3. Check materials and specifications

"Allow for kitchen units" and "supply and fit Howdens shaker units to specification" are wildly different commitments. Where finishes matter — tiles, flooring, sanitaryware, windows, doors — push for named products or a clear supply allowance with a sensible budget.

4. Check VAT status

UK builders may or may not be VAT registered. A quote that excludes VAT can look 20% cheaper than one that includes it. Always ask: is this price inclusive or exclusive of VAT, and what is the builder's VAT status?

5. Check the payment schedule

A sensible schedule ties payments to completed stages, with a small final payment held back until snagging is signed off. Be cautious of large up-front deposits, payments demanded before work is delivered, or "round number" stage payments that don't line up with actual progress. The Renovation Budget Planner includes a payment-schedule template you can fill in alongside the builder.

6. Check waste, access and protection

Skips, skip permits, scaffolding, parking, dust sheets, floor protection and making good of driveways or grass — all real costs that often get left off the quote. If they are not in the quote, they will appear on the invoice or in a difficult conversation later.

7. Watch provisional sums and vague allowances

Provisional sums are estimates, not fixed prices. If a quote includes a £4,000 allowance for "kitchen supply" or "electrics", assume the final cost will land above it, not below. Get those items priced properly before you commit.

8. Ask polite clarification questions before accepting

Builders generally respect homeowners who ask sensible questions calmly and in writing. Send a short list: scope clarifications, VAT, payment schedule, exclusions, provisional sums and timings. A builder who refuses to put answers in writing is telling you something useful.

The Builder's Brief UK provides practical homeowner guidance based on real trade experience. It is not legal, financial, architectural, structural engineering, planning or building-control advice, and is not a replacement for project-specific guidance from suitably qualified professionals.