UK cost guide · September 2026
How much do new windows cost in 2026?
Replacing all the windows in a 3-bed semi with uPVC double glazing costs about £5,500 to £7,500 including VAT for a mid-range product, fitted, in an average UK area outside London (about £6,500 to £8,800 in London). A 2-bed house costs £3,900 to £5,300 and a 4-bed £7,100 to £9,700. Timber and aluminium windows cost more.
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Already have a window installer’s price? Check where your quote sits against this range. Still deciding what to do first? Read where to start a home renovation.
Replacement windows prices in 2026
Ranges are for a typical home outside London, including VAT, before fees and contingency. Use the calculator for your size, region and finish.
| Type | Basic | Mid-range | Premium |
|---|---|---|---|
| 2-bed house (about 7 windows) | £2,800 to £3,900 | £3,900 to £5,300 | £5,300 to £7,000 |
| 3-bed semi (about 10 windows) | £4,000 to £5,500 | £5,500 to £7,500 | £7,500 to £10,000 |
| 4-bed house (about 13 windows) | £5,200 to £7,100 | £7,100 to £9,700 | £9,700 to £13,000 |
Replacement windows costs by region
Labour costs vary across the UK far more than materials. Replacement windows prices in London run about 18% above the UK average outside London, and in Northern Ireland about 9% below it.
| Region | Mid-range cost |
|---|---|
| UK average (outside London) | £5,500 to £7,500 |
| London | £6,500 to £8,800 |
| South East | £5,900 to £8,100 |
| East of England | £5,700 to £7,800 |
| South West | £5,600 to £7,700 |
| West Midlands | £5,400 to £7,400 |
| East Midlands | £5,400 to £7,300 |
| Scotland | £5,400 to £7,300 |
| North West | £5,300 to £7,200 |
| Yorkshire and the Humber | £5,300 to £7,200 |
| Wales | £5,200 to £7,100 |
| North East | £5,200 to £7,100 |
| Northern Ireland | £5,000 to £6,800 |
Which region is my town in? Brighton, Oxford and Southampton are in the South East; Cambridge and Norwich in the East of England; Bristol, Bath and Exeter in the South West; Birmingham and Coventry in the West Midlands; Nottingham and Leicester in the East Midlands; Glasgow and Edinburgh in Scotland; Manchester and Liverpool in the North West; Leeds, Sheffield and Hull in Yorkshire and the Humber; Cardiff and Swansea in Wales; Newcastle and Sunderland in the North East; and Belfast in Northern Ireland. Somewhere else? Type your postcode into the calculator above and it says which region’s prices it uses.
Want it for your area? See local prices and council building control fees for 92 council areas in England and Wales (not every council yet).
What's included in these prices
Included
- Removal of old windows
- Supply and fitting of new uPVC double-glazed windows
- Sealing and making good around frames
- FENSA or Certass registration
Not included
- Doors, bifolds and conservatories
- Timber or aluminium frames (usually more)
- Repairs to rotten sills or lintels
What drives the cost
- Number and size of windows. More, and larger, windows cost more.
- Frame material. uPVC is cheapest; timber and aluminium cost more.
- Glazing. Triple glazing and acoustic glass add cost.
Planning, regulations and VAT
Replacement windows must meet building regulations. Use an installer registered with a competent person scheme such as FENSA or Certass, who will certify the work. Double glazing is charged at the standard 20% VAT rate.
Checklist: what to ask window installers to confirm
Print this or save it as a PDF, one copy for each quote. Mark each line included, separate or not confirmed as quotes come in. An empty amount means unknown, not free.
| Item | What to confirm | Included? Amount? |
|---|---|---|
| Count | Number, sizes and opening types. | |
| Product | Frame material, glazing and colour. | |
| Certification | FENSA or Certass certificate. | |
| Guarantee | Length and insurance backing. |
Questions people ask
Is there VAT on double glazing?
Yes, at 20%. Double glazing is excluded from the energy-saving materials zero rate.
Sources and method
Our ranges combine published 2026 UK cost guides, industry data and our own survey of council fees. We check them every quarter. They are budget ranges, not quotes: always get at least three detailed written quotes. Read how Estiquote estimates work, or download the full cost data.