How do I compare builder quotes that cover different things?

Normalise them first. Write a single, specific scope of work, then map each quote against it, noting what each one includes and excludes. Add any missing items back to the quotes that left them out, at a sensible figure. Only once every quote covers the same defined job can you compare the totals meaningfully. Comparing headline figures directly, before normalising, is the most common and most expensive mistake.

Why can’t I just compare the totals?

Because the totals almost never describe the same job. One quote includes scaffolding, making good, and Building Regs fees; another excludes them. One assumes a premium specification; another assumes basic. Until you have established what each total actually covers, the numbers are not comparable, and the cheapest headline is regularly the dearest project once the gaps are filled in.

What should I send builders so their quotes are comparable?

A single written scope of work that lists the rooms, the tasks, the materials, and the finishes you expect, in detail. When every builder prices the same brief, the differences that remain are real, and you are comparing prices rather than assumptions. Without a shared brief, each builder makes their own guesses and the quotes diverge for reasons that have nothing to do with value.

How many quotes should I compare?

Three is the usual recommendation, because two gives you no sense of the middle and one gives you nothing to compare. If a third is hard to get, two quotes plus an independent price check on the scope can stand in for it, telling you whether the figures sit in the fair UK range for your area.

What if one quote is missing a detailed breakdown?

Ask for one. A quote you cannot break down is a quote you cannot compare. If a builder will not itemise labour, materials, and exclusions, you cannot put their price next to the others on a like-for-like basis, and that itself is a reason to be cautious. A fair builder will provide a breakdown on request.

How to compare builder quotes when they all look different

A step-by-step method for putting UK builder quotes on a like-for-like footing when they cover different scopes, use different formats, and arrive at wildly different totals, so you can compare prices instead of guesses.

A laptop and paperwork laid out to compare builder quotes. — Photo by Lauren Mancke on Unsplash

Three quotes land for the same job at £18,000, £24,000, and £31,000, in three different formats, covering three subtly different versions of the work. The instinct is to start from the totals and work out which is best value. That is backwards. The totals are the last thing to compare, not the first, because until you know what each one covers, they describe different jobs at different prices.

This is the method for putting quotes on a like-for-like footing so the comparison actually means something. For why quotes diverge in the first place, see why are my three builder quotes so different.

Step 1: write one specific scope#

Before comparing anything, write down exactly what you want done: the rooms, the tasks, the materials, and the finishes, in as much detail as you can. This is the yardstick you will measure every quote against. If you sent builders only a vague brief, this step also explains why the quotes diverged: they each filled the gaps with their own assumptions.

Step 2: map each quote against the scope#

Take each quote and mark, line by line, what it includes and excludes against your scope. The usual variables:

Scaffolding, skip hire, and waste removal
Making good, plastering, and decoration
Building Regs fees and structural calculations
The specification of finishes
Whether kitchen or bathroom fit-out, flooring, and connections are in or out

See the 15 hidden costs for the full list of items that are commonly left out.

Step 3: add the missing items back#

This is the step that changes the answer. For each quote that excludes something the others include, add that item back at a sensible figure. A quote that looked cheapest because it left out scaffolding and making good often moves up the order once those are priced in. Now every quote represents the same job.

Step 4: now compare the totals#

Only at this point do the totals mean something. The differences that survive normalisation are real: genuine differences in specification, insurance, warranty, day rate, or simply how busy each builder is. See what is a fair builder’s markup for how to read those differences, and should I take the cheapest quote for what a low normalised price does and does not tell you.

Step 5: weigh the non-price factors#

Price is not the only axis. With the quotes normalised, factor in:

Insurance and a verifiable company (see how to check a builder on Companies House)
References on similar completed jobs
The quality and clarity of the quote itself, which often signals how the job will be run
Availability and start date

A shortcut for two quotes#

If you can only get two quotes, an independent price check on the scope can stand in for the third opinion. That is what Check the Quote does: paste or upload a quote and we benchmark every line against current UK rates for your postcode and flag what is above the fair range, so two quotes plus a check can be enough to decide with confidence. Your first check is free.

Got a quote you want checked?

Paste any UK contractor quote and Check the Quote compares every line item against current market rates, flags missing scope, and runs a Companies House check on the contractor. Free on your first project.

Check a quote

Frequently asked questions

How do I compare builder quotes that cover different things?: Normalise them first. Write a single, specific scope of work, then map each quote against it, noting what each one includes and excludes. Add any missing items back to the quotes that left them out, at a sensible figure. Only once every quote covers the same defined job can you compare the totals meaningfully. Comparing headline figures directly, before normalising, is the most common and most expensive mistake.
Why can’t I just compare the totals?: Because the totals almost never describe the same job. One quote includes scaffolding, making good, and Building Regs fees; another excludes them. One assumes a premium specification; another assumes basic. Until you have established what each total actually covers, the numbers are not comparable, and the cheapest headline is regularly the dearest project once the gaps are filled in.
What should I send builders so their quotes are comparable?: A single written scope of work that lists the rooms, the tasks, the materials, and the finishes you expect, in detail. When every builder prices the same brief, the differences that remain are real, and you are comparing prices rather than assumptions. Without a shared brief, each builder makes their own guesses and the quotes diverge for reasons that have nothing to do with value.
How many quotes should I compare?: Three is the usual recommendation, because two gives you no sense of the middle and one gives you nothing to compare. If a third is hard to get, two quotes plus an independent price check on the scope can stand in for it, telling you whether the figures sit in the fair UK range for your area.
What if one quote is missing a detailed breakdown?: Ask for one. A quote you cannot break down is a quote you cannot compare. If a builder will not itemise labour, materials, and exclusions, you cannot put their price next to the others on a like-for-like basis, and that itself is a reason to be cautious. A fair builder will provide a breakdown on request.

Last updated: 25 May 2026

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