How to compare window quotes
The step-by-step method for lining quotes up fairly.
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Compare quotes the right way
Don’t compare windows on price alone
A cheaper number rarely means a cheaper job. Read every window quote properly first — then compare several vetted local installers on the same spec.
- Learn what a fair, complete quote should show
- Compare like-for-like, not just headline price
- Free, no-obligation quotes from accredited local fitters
The quick quote checklist
1
Matching glass & frame specs
2
A full price breakdown
3
Guarantee — and who backs it
4
FENSA or CERTASS registration
5
Deposit & cancellation terms
Compare local window quotes
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The 7 things every window quote should show
If a quote is missing any of these, you can’t compare it fairly — and you can’t hold anyone to it. Ask for them in writing before you decide.
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The exact glass and frame spec
Glass type and U‑value, the frame profile and material, colour and any trims — the detail that actually sets the price.
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Every window and door, itemised
Quantity, size, opening style and location for each unit, so two quotes are describing the same job.
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A full price breakdown
Supply, fitting, VAT, scaffolding, waste removal and “making good” — not just one round number.
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Lead time and how long it takes
When the survey and installation would happen, and how many days you’ll have fitters on site.
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The guarantee — and who backs it
Length of cover, what it includes, and whether it’s an insurance‑backed guarantee that survives if the firm doesn’t.
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Certification and registration
FENSA or CERTASS registration and building‑control notification, so the work is signed off correctly.
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Deposit, payments and cancellation
Any deposit, the payment schedule, how the deposit is protected, and your right to cancel.
Compare like-for-like, not just the price
The cheapest quote often describes a cheaper job — thinner glass, a lower‑spec profile, fewer opening casements, or “making good” left off entirely. Until every quote lists the same specification, the numbers aren’t really comparable.
Line the quotes up field by field: same glass, same frames, same number of openers, same guarantee, same VAT treatment. When one number is a lot lower, it’s usually because something on that list is missing — and that’s worth a question before you sign.
A quick like-for-like check
Same glass? Match glass type and U‑value across every quote.
Same frames? Compare profile, material and colour, not just “uPVC”.
Same count? Check the number, size and opening style of each unit.
Same extras? Scaffolding, waste, making good and VAT all included?
Same cover? Compare guarantee length and whether it’s insurance‑backed.
Compare the right way
We only point you to vetted, accredited local installers — and every quote is free and no‑obligation, so you can compare in your own time.
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Tell us about your project
Share your postcode and a few contact details. It takes about a minute and there’s no obligation.
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We match vetted local installers
You’re matched with accredited fitters who cover your area and can quote for your job.
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Compare quotes side by side
Get free, no‑obligation quotes and compare them like‑for‑like using our checklist.
Want to read what homeowners say about installers first? You can see verified installer reviews before you request quotes.
Comparison guides
Short, practical reads that help you request, read and compare window quotes with confidence.
What to check in a quote
The full checklist to run over every quote you receive.
Read the guide →Window quote red flags
The warning signs that a quote — or a firm — is best avoided.
Read the guide →How many quotes to get
How many is enough to compare well without wasting time.
Read the guide →Understanding your quote
Plain-English meaning behind the jargon and line items.
Read the guide →Questions to ask installers
What to ask a fitter before you commit to anything.
Read the guide →Online vs in-home quotes
When a doorstep survey beats an online estimate.
Read the guide →Deposits, contracts & protection
Deposit protection, contract terms and your rights.
Read the guide →Negotiating window prices
How to negotiate fairly once you’ve compared.
Read the guide →Ready to compare a few quotes?
Request free, no-obligation quotes from vetted installers in your area, then compare them properly using our checklist.
Compare my quotes →Common questions
How many window quotes should I get?
Three is the usual sweet spot — enough to spot an outlier price or a missing line item without dragging the process out. Our guide on how many quotes to get explains why.
Is comparing quotes here free?
Yes. Requesting and comparing quotes is free and there’s no obligation to go ahead with any installer you’re matched with.
Why is the cheapest quote not always the best?
A lower number often describes a lower‑spec job — thinner glass, fewer openers, or extras like scaffolding and making good left off. Comparing like‑for‑like is the only fair way to judge value.
What should a proper window quote include?
The exact glass and frame spec, an itemised price breakdown, lead times, the guarantee and who backs it, FENSA/CERTASS registration, and deposit and cancellation terms. See what to check.
Do I have to be the homeowner?
You can still request quotes if you’re not the owner, but an installer will need the homeowner’s go‑ahead before any work is agreed.
Compare with confidence
Read your quotes properly, then compare several vetted local installers on the same spec. It’s free, and it takes about a minute to start.
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