How much does double glazing cost?
A standard uPVC casement window fitted runs £400 to £1,000, with published averages around £475 to £650 per window. Whole house figures for a 3 bed home range from £4,000 to £15,000 depending on window count and, above all, frame material: timber commonly costs 2 to 3 times uPVC.
£400–£1,000 per uPVC window fitted; £4,000–£15,000 for a whole house
The published figures
Every figure below is a published guide figure, shown as its publisher printed it and linked to the source. Retrieved on 17 July 2026.
| What | Published figure | Basis | Source |
|---|---|---|---|
| Typical A rated uPVC window, fitted | around £650, range £400–£1,000 | Checkatrade cost guide (opens in new tab) | |
| Whole 3 bed house, 8 to 12 windows | £8,000–£15,000 | Checkatrade cost guide (opens in new tab) | |
| Full house average | £4,000–£7,000 | MyBuilder price guide (opens in new tab) | |
| National average uPVC casement, fitted | £475 | ExpertSure regional study of Glass and Glazing Federation averages (opens in new tab) | |
| Whole house in uPVC / timber | £4,000–£6,000 / £10,000–£16,000 | ExpertSure regional study of Glass and Glazing Federation averages (opens in new tab) | |
| Timber, per window | £950–£1,400 | ExpertSure regional study of Glass and Glazing Federation averages (opens in new tab) | |
| Triple glazing | around 20% more than double | Homebuilding and Renovating (opens in new tab) |
What moves the price
- Frame material: uPVC, aluminium or timber
- Window style and size: casement, sash, bay
- Double or triple glazing
- Access and scaffolding
- Number of windows
Get real quotes
Guide figures set expectations; only quotes set your price. Compare local businesses on their public evidence:
Sources
- Checkatrade cost guide (opens in new tab) (directory site, published 2026) Checkatrade states these guide prices come from AI analysis of its past jobs.
- MyBuilder price guide (opens in new tab) (directory site, published 2026)
- ExpertSure regional study of Glass and Glazing Federation averages (opens in new tab) (trade press, published 2026)
- Homebuilding and Renovating (opens in new tab) (trade press, published 2022-04-04) Published in 2022, so treat these figures as older than the rest of this guide.
Figures retrieved from the named sources above on 17 July 2026. Prices change; always confirm with quotes.
More ways to check who to trust
Free, independent checks. No ads, no paid placement.
- Quote Check
Describe the quote you were given and see which features are officially listed warning signs.
- VAT on Building Work
20%, 5%, 0%, or legitimately none at all: what the published VAT rules actually say.
- Busy Season
When each trade is actually busiest, from the dates on real finished jobs.