How much do new windows cost?
The short answer
New uPVC double glazing typically costs £400–£900 per window fitted. A whole 3-bed house is usually £4,000–£8,000.
Typical prices
| Job | Typical cost | Time |
|---|---|---|
| One uPVC window | £400–£900 | Half a day |
| Whole 3-bed house, uPVC | £4,000–£8,000 | 1–2 days |
| Whole house, aluminium | £8,000–£15,000 | 2–3 days |
Typical UK prices for 2025–26, including VAT. Estimates only: your quotes will vary by home, location and the work involved.
What affects the price
- Number and size of windows
- Frame material and colour
- Double or triple glazing
- Opening style
What's usually included
- Removing and disposing of old windows
- Fitting and sealing
- Building regulations certificate (FENSA or Certass)
- Guarantee
Ways to bring the cost down
- Do all windows at once: per-window prices drop
- White uPVC costs least; colours add to the price
- Ask about insurance-backed guarantees
See what yours would costCompare up to 3 quotes from FENSA or Certass installers near you.
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Questions people ask
Do I need planning permission for new windows?
Usually not, if they look similar to the old ones. Listed buildings and some conservation areas need permission.
What is FENSA?
FENSA and Certass are schemes that let installers self-certify that new windows meet building regulations. You'll get a certificate, which you'll need when you sell your home.
How long do uPVC windows last?
Typically 20 to 35 years, depending on quality and how they're looked after.