Free tool
Builder quote comparison tool
Enter up to three quotes and tick what each one actually includes. The tool flags gaps and shows an illustrative adjusted total, so the cheapest headline price isn't automatically the cheapest job.
Step 1
Enter each quote
Add the total price for each builder, then untick anything the written quote does not clearly state is included.
Step 2
Like-for-like adjusted comparison
The adjusted total adds an illustrative allowance for each excluded item, based on typical proportions of a project's price. It is a prompt to ask the builder for a real figure, not a quotation.
| Builder | Quoted price | Items excluded | Illustrative adjusted total |
|---|---|---|---|
| Quote A | — | None ticked as excluded | — |
| Quote B | — | None ticked as excluded | — |
| Quote C | — | None ticked as excluded | — |
Enter at least one price above to see an adjusted comparison here.
Guidance
Why quotes at similar prices can hide very different jobs
A written quotation should state exactly what is and is not included. In practice, many quotes are silent on scaffolding, waste removal, making good after first-fix trades, VAT treatment and who supplies materials. Silence usually means it is not included.
The cheapest headline figure is often cheapest because it has left the most out, not because the builder is more efficient. Ask each builder, in writing, to confirm whether every item on the list above is included in their price.
Once you have like-for-like prices, read our guide to comparing building quotes for the questions worth putting to each builder before you sign anything.
Before any money changes hands, see how much deposit you should reasonably pay and use the stage payment planner to structure the rest.
Want a second opinion on one quote?
Get an independent, jargon-free review of a single quotation.
Builder Proof UK publishes general educational information for homeowners. It is not legal, structural, surveying, planning, electrical, gas, insurance or financial advice, and it does not replace advice from a suitably qualified professional for your specific project.