How Much Do New Windows Cost?
New windows in the UK typically cost from around £400 to £950 per window for uPVC double glazing, supply and fit. The total depends on the window style, frame material, glazing and the size of your home. Here are real 2026 guide prices, plus how to pay less.
Check If You QualifyAverage cost of new windows per window
If you are pricing up replacement windows, the single most useful number is the cost per window. As a rough guide, a standard uPVC casement window costs from around £400 to £950 fully fitted. Larger styles such as bay windows, and premium materials like aluminium and timber, push the price higher.
These are guide prices for supply and fit and are always subject to a free survey, because the final figure depends on your exact window sizes, access, the style and colour you choose, and how many windows you replace at once.
New window prices by style and material
Guide prices per window, supply and fit, double glazed. Subject to a free survey.
| Window type | uPVC (guide) |
|---|---|
| Casement window | £400–£950 |
| Flush casement window | £500–£1,050 |
| Tilt & turn window | £550–£1,150 |
| Sash window | £700–£1,500 |
| Bay window | £1,100–£2,400 |
Frame material changes the price significantly. As a rule of thumb, aluminium adds around 25 to 30 per cent over the equivalent uPVC window, and timber adds around 50 to 70 per cent. Upgrading from double to triple glazing typically adds around £150 to £300 per window, or roughly 15 to 25 per cent.
Cost to replace all the windows in a house
Whole-house guide prices for uPVC double glazing, supply and fit. Subject to a free survey.
| Property size | Guide cost (uPVC) |
|---|---|
| 1-bed home | £1,800–£3,200 |
| 2-bed home | £2,800–£5,000 |
| 3-bed home | £4,000–£8,000 |
| 4-bed home | £6,000–£12,000 |
| 5-bed home or larger | £8,000–£16,000 |
Replacing every window at once almost always works out cheaper per window than doing one or two at a time, because installation and survey costs are shared across the whole job.
What affects the price of new windows
Two homes of the same size can get very different quotes. The biggest factors that move the price up or down are:
- ✓ Number and size of windows
- ✓ Window style (casement, sash, bay)
- ✓ Frame material (uPVC, aluminium, timber)
- ✓ Glazing (double or triple)
- ✓ Colour and finish (anthracite, woodgrain)
- ✓ Access, scaffolding and any building work
This is why an exact price always needs a free survey. Once an assessor has measured up, you get a fixed quote with no surprises.
Are new windows worth it?
For most homeowners, replacing tired single glazing or failed double glazing is worth it. New A-rated double glazing keeps heat in and draughts out, which can lower your heating bills and make every room more comfortable. It also cuts outside noise, improves security, helps fix damp and condensation, and can lift your EPC rating and your home's value.
If your current windows are five years or older, misting up between the panes, or hard to open, that is usually the point at which replacing them pays off. Browse our double glazed windows to see the styles available.
How to pay less for new windows
You do not always have to pay the full price up front. Many UK homeowners can cut the cost with a double glazing grant or a window replacement grant, and where funding applies you can often spread the cost with nothing to pay up front. Some qualifying homeowners can have their windows installed with no upfront cost at all.
Your new windows quote checklist
Use this list when comparing quotes so you are pricing like for like:
- ✓ Confirm the price is supply and fit
- ✓ Check the frame material and glazing (double or triple)
- ✓ Ask for the energy rating of the glass
- ✓ Confirm the guarantee length (10 years or more)
- ✓ Check that removal and disposal are included
- ✓ Ask whether any grant or funding can reduce the cost
New windows cost: your questions answered
How much does it cost to replace all the windows in a house?
As a guide, replacing all the windows in a UK home with uPVC double glazing typically costs from around £1,800 to £3,200 for a 1-bed, £2,800 to £5,000 for a 2-bed, £4,000 to £8,000 for a 3-bed, £6,000 to £12,000 for a 4-bed and £8,000 to £16,000 for a 5-bed or larger. These are guide prices only and your exact cost is confirmed after a free survey.
What is the cost of new windows for a 3-bed house?
A typical 3-bed house fully fitted with uPVC double glazing usually costs in the region of £4,000 to £8,000 supply and fit. The final figure depends on the number and size of windows, the style, the colour and whether you choose aluminium, timber or triple glazing. A free survey gives you an exact price.
Are new windows worth it?
For most homeowners, yes. New A-rated double glazing reduces heat loss and draughts, can lower heating bills, cuts outside noise, improves security and helps with damp and condensation. It can also improve your EPC rating and add to the value of your home.
Can I get new windows for free?
Some qualifying homeowners can have new windows installed with no upfront cost through grant and funding schemes, and where funding applies the cost can often be spread. Eligibility depends on your circumstances. Use the free funding checker to see what you could qualify for.
