New uPVC Windows vs buying from a national installer
A national installer sells you a finished job. We sell you the windows. The prices aren't directly comparable until you add the cost of fitting, so here are both, with sources.
What a national installer charges
| Source (checked 31 Oct 2026) | uPVC casement, supplied and fitted | 3-bed house |
|---|---|---|
| Everest 2026 guide price | £700 to £1,800 per window | not stated |
| Anglian | No prices published; quotes after measuring | |
| Safestyle | No prices published; quotes after a consultation | |
| Bestbuilders, Q3 2026, 1200 × 1200mm | £400 to £700 | £4,000 to £6,000 (8 to 10 windows) |
| ExpertSure 2026, 1200 × 1050mm | £475 average (£415 to £570 by region) | £4,350 to £6,000 (10 windows) |
| Checkatrade, May 2026 | £500 to £1,250, average £1,000 |
These include VAT, fitting, removing and disposing of old windows, and the certificate.
What the same windows cost from us
| Item | Our window price inc VAT | Plus your fitter (£150 to £400 a window*) |
|---|---|---|
| One 1200 × 1200mm Side Opener + Fixed | £268.96 + delivery from £30.00 | about £449 to £699 |
| Whole 3-bed semi, 8 windows (the list) | £2,120.07 + delivery from £30.00 | about £3,350 to £5,350 |
*Fitting labour range from Bestbuilders 2026. Your fitter's price may differ. The totals include one delivery within 15 miles.
Delivery is charged once per delivery, priced by distance: from £30.00 within 15 miles, rising in bands to £400.00 for the furthest addresses. Collection is free. See delivery charges for every band; your basket shows the exact charge for your postcode before you pay.
The honest difference
- Against Everest's published guide (£700 to £1,800 a window), our 1200 × 1200mm window plus a fitter typically costs less, by next to nothing to roughly £1,351 a window depending on where both prices fall.
- Against average fitted prices (£400 to £700 a window), the total with your own fitter is often similar. The saving depends mainly on what your fitter charges.
- On the windows alone, you see a fixed price before you buy, with no home visit and no negotiation.
We don't claim a set percentage saving, because it depends on your fitter and your house.
Who does what
| Item | National installer | New uPVC Windows |
|---|---|---|
| Measuring | Their surveyor | You or your fitter, using our measuring guide |
| Price | Quote after a visit | Online, straight away |
| Manufacture | Made to the survey | Made to your sizes |
| Delivery | Part of the job | Kerbside on our vehicle, priced by distance, or free collection |
| Fitting, removal, disposal | Included | Your own fitter |
| Building Regulations | Installer's FENSA/CERTASS certificate | Your registered fitter, or building control |
| Guarantee on fitting | Installer's | Your fitter's |
| Guarantee on the windows | Installer's | Ours, including 5 years on sealed glass units |
Is buying direct right for you?
It suits you if you have a fitter you trust, or a builder already on site, and you want to see your window prices before anyone visits. If you'd rather one company handled everything, an installer may be the simpler choice. We are supply only and don't fit windows.
Opening hours: Monday to Thursday 8am to 5pm, Friday 8am to 3pm.
Price your windows
See your exact window prices before anyone visits.