Typical UK price ranges by window style
These are broad national ranges gathered from how the market generally prices window styles, not a quote from us, since prices vary by region, installer overhead and specification.
| Style | Typical UK range, fully fitted |
|---|---|
| uPVC casement | £400 to £800 |
| Flush casement | £450 to £900 |
| Tilt and turn | £500 to £950 |
| Triple glazed casement | £550 to £1,000 |
| Sliding sash | £700 to £1,500 |
| Aluminium | £800 to £1,600 |
| Bay window, three facet | £1,600 to £3,000 |
What actually moves the price on a single window
Opener count matters more than most buyers expect: a window with three opening sashes costs noticeably more than one of the same size with a single opener and two fixed lights, because each opener needs its own hinges, handle and locking hardware.
Colour and foil finish add a manufacturing step over plain white. Glass specification, acoustic laminate, solar control coatings or obscure glass for a bathroom, adds further. Access matters too: a first floor rear window needing scaffolding or a tower costs more to fit than a ground floor front window reachable from a ladder.
- Number of opening sashes vs fixed lights
- Frame colour or foil finish
- Glass upgrades: acoustic, solar control, obscure
- Access, scaffolding and whether parking is available
- Bay or bow construction, priced as a structural job
Supply only vs fully fitted
Supply only prices, buying the window and fitting it yourself or with your own builder, look cheaper on paper but exclude removal of the old window, disposal, making good the reveal and the compliance certificate, all of which a fully fitted price includes. For most homeowners fully fitted is the safer comparison, since it is the number you can actually rely on for budgeting.
How house size changes the total
A typical two bedroom terrace might have six to eight window openings, a three bedroom semi eight to twelve, and a four bedroom detached twelve or more, so the per-window range above needs multiplying by your own count rather than treated as a whole house figure. Bays, en suite obscure glass and a mix of styles all pull an individual house away from a simple average.
Our real from-prices, fully fitted
Unlike the broad ranges above, these are prices we actually charge, including removal of the old window, disposal, making good and the compliance certificate.
| Window | CW Doors from-price, fully fitted |
|---|---|
| uPVC casement | £450 |
| Flush casement | £520 |
| Tilt and turn | £560 |
| Triple glazed casement | £610 |
| Sliding sash | £780 |
| Aluminium | £890 |
| Bay, three facet | £1,850 |
Get your own itemised figure
Skip the national averages and get a free measured survey with one written price for your actual windows.
How to get a number you can trust
Ask for a written, itemised quote after a free measured survey rather than an over the phone estimate, so you can see which openings are driving the total and query any single line rather than accepting one lump sum. For the step by step method of building your own house's total from these figures, see our fuller guide on how much new windows cost.
Costs it is easy to overlook when budgeting
Making good internally, patching plaster or trim around a reveal that does not exactly match the old frame size, can be a separate line if an installer does not include it as standard, so ask specifically whether it is covered. External finishing, render repair around the frame or replacing a cill that has perished, is another area worth confirming before you sign off a quote, since it is easy to assume it is bundled in when it is priced separately by some installers.
Waste disposal of old frames and glass is a legal requirement, not an optional extra, and a fully fitted price from a reputable installer should already include it rather than leaving you to arrange a skip.
Staging a whole house replacement
Not every household wants or needs every window replaced in one visit, and splitting a job into stages, front elevation first, then rear, then upstairs, is a reasonable way to spread the cost over more than one budget period. The trade off is that each stage carries its own small setup cost for the fitting team, so a single visit covering more windows is usually cheaper overall than the same total number of windows split across several separate bookings.
Signs your existing windows are costing you more than a new one would
Condensation trapped permanently between the panes means the sealed unit has failed and lost its insulating gas fill, so that pane is doing very little thermally regardless of how new the frame looks. Draughts you can feel with a hand near the frame on a windy day, handles that need lifting or slamming to lock, and visible daylight around a closed sash are all signs the window is past the point where minor repair fixes the underlying problem.
A frame that has swollen, warped or cracked, rather than just a tired colour, is usually a structural sign rather than a cosmetic one, and continuing to patch it up tends to cost more in call outs over a few years than budgeting for a replacement in one go.