How Much Does It Cost to Replace 10 Windows?

Ten windows, and either side of it

Ten is where the numbers stop being linear

Not because of a bulk discount — there rarely is one worth the name — but because a ten-window house is usually a house where access, scaffolding and a two-day fit are being priced once rather than twice. Quotes that scale perfectly with the window count are usually quotes that have not looked at the house.

Which of your ten are upstairs, how many open, and whether any are bays will move this more than the count itself.

Which houses have ten windows

Ten is typical of a larger three-bed semi or a smaller four-bed, counting every window front and back, including the small ones — bathroom, landing, a kitchen side window.

Facet Pro counts the windows on the front from your photograph and asks about the back and sides, so you do not have to count from memory.

What is included in these prices

Supplying and fitting the new windows, taking out and taking away the old ones, and sealing and making good around each new frame. VAT is in every figure.

Access for upstairs windows is included where the estimate needs it (£936 a job for a scaffold tower), and small jobs carry a minimum charge of £970. Not included: new sills or lintels where the old ones have failed, internal decorating, and anything structural.

How these prices compare with other UK guides

Published guides often come in lower. Checkatrade’s window cost guide (last updated July 2026) puts a standard 1,200 × 1,200 mm uPVC casement at £450–£550 plus VAT, about £540–£660 with VAT, and a 3-bedroom house with 12 windows at £5,000–£10,000 plus VAT.

Our figure for the same standard window is about £745 including VAT, for the window itself, fitted, as part of a larger job. It is built from what these jobs typically settle at with established installers. Our estimates then add taking the old frames away, making good and, where needed, access for upstairs windows, which is why the table above, and our £847 to £1,540 a window on an eight-window job, work out at more per window than this. A smaller local firm may quote less than our range; some national companies quote at the top of it.

Whichever figure you use, compare quotes like for like: check each one says whether removal, access, making good and VAT are included.

Checkatrade’s window cost guide →

Planning estimate or quotation?

Every figure on this page is a planning estimate: what a job like this typically costs, for budgeting and for judging the quotes you get. It is not a quotation. A quotation comes from an installer after a survey, when the exact sizes, specification and condition of your house are known.

Facet Pro narrows the estimate to your own house from a photograph of the front — the windows it can see, the wall it can measure against your front door — and says which parts are measured and which are estimated for your house type. Your installer confirms the figure on survey.

How our estimates work →