How Much Do New Windows Cost in the UK?
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What the style does to the price
| Style | Eight windows fitted, inc VAT |
|---|---|
| Casement | £6,774 – £12,317 |
| Flush casement | £8,810 – £16,018 |
| Sliding sash | £15,822 – £28,768 |
What moves the number, in order
How many windows, then how big they are, then how many of them open. An opening light is a hinge, a lock and a sealed frame, and it costs about the same whatever size window it goes in — so a fixed pane and a window with two openers can differ by well over a third for the same hole in the wall. Nobody can tell which you have from a photograph, which is why we ask.
Colour is the smallest of the four and the one people expect to be the biggest. Anthracite, black or a woodgrain finish adds a single-figure percentage, not a category.
Example: a 3-bed semi
A typical three-bedroom semi has about eight windows. In white uPVC casements that is £6,774 to £12,317 fitted, inc VAT. The same eight in aluminium is about £13,413 to £24,387.
A 2-bed mid-terrace with six windows is about £5,090 to £9,254; a 4-bed detached with twelve is about £9,702 to £17,640.
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.
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.
Windows cost guides
- Window Replacement Cost UK
- Anthracite grey vs white uPVC windows cost
- uPVC Window Prices UK
- 10 Window Replacement Cost UK
- Window Replacement Cost Calculator UK
- Sash windows cost UK
- 12 Window Replacement Cost UK
- Aluminium Window Prices UK
- 8 Window Replacement Cost UK
- New Windows and Front Door Cost UK
- New Windows and Roofline Cost UK
- Cost of Replacing Windows in a 3-Bed Semi UK
- New Windows for a 1930s Semi UK
- Energy Efficient Windows UK
- Window and door security: what to ask for before you buy
Common questions
How much does a new window cost in the UK?
About £847 to £1,540 per window fitted for a standard uPVC casement, inc VAT, when several are done together. One small window on its own costs more per window because of the minimum charge.
How much do windows cost for a 3-bed house?
About £6,774 to £12,317 for eight uPVC windows on a 3-bed semi, fitted and inc VAT.
Are aluminium windows more expensive than uPVC?
Yes — a little over twice the price of the same window in uPVC, with the colour included in that.
Why do window quotes vary so much?
Mostly because of which company quotes. The same windows to the same specification can settle at very different prices with different installers, which is why the figure here is a range.
Facet Pro is in early access. We are starting to check how we measure wall area from a photograph against surveyed properties, so treat wall and roof figures as indicative and window figures as a guide.
Your house isn’t average.
See this project on your own home and get a planning estimate. Any figure on this page is for a typical house. Start with one photograph of the front and we will find your windows, doors, roof and walls, estimate your wall area, and price your own elevation.
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These are planning estimates — not a quotation, and not a survey. Windows and doors: what these jobs typically sell for, from 25 years in the home improvement industry, checked against current UK prices. Render, roof and roofline: UK material and labour rates, with scaffolding, waste and VAT. What you pay depends on your own house and, more than anything else, on which company quotes it. Your installer confirms the figure on survey. Prices checked October 2026.