How much does a Velux window cost in the UK?
A Velux window costs £1,400 on average in the UK. Most jobs fall between £900 and £2,000 per window, supplied and fitted. Window type: Small manual centre-pivot £900 to £1,250; Standard manual centre-pivot £1,000 to £1,450; Large manual centre-pivot £1,200 to £1,700. Prices reviewed June 2026.
A Velux roof window, or skylight, is priced per window, and the main thing that moves the cost is whether you are swapping an existing one or cutting a brand new opening in the roof. Size, the way the window opens, and whether scaffolding is needed do the rest.
Velux window cost calculator
Use the calculator to price your Velux window in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
To price the whole job, use the loft conversion cost calculator.
Velux window cost breakdown
Typical Velux window costs, by the unit:
| What | Typical UK cost |
|---|---|
| Per window, supplied and fitted | £900 to £2,000 per window |
| + New opening rather than a swap | add £250 to £600 per window |
| + Electric or solar opening | add £300 to £800 per window |
| + Scaffolding needed for access | add £400 to £900 per window |
| 1 window | £900 to £2,000 |
| 2 windows (typical) | £1,800 to £4,000 |
| 4 windows | £3,600 to £8,000 |
Velux window cost by window type
Velux prices are driven by size and by how the window opens. These are swap-for-swap figures, replacing an existing window of the same size. Cutting a brand new opening in the roof adds more.
| Window type | Cost per window, supplied and fitted | Notes |
|---|---|---|
| Small manual centre-pivot (550 x 780) | £900 to £1,250 | CK02. The usual bathroom or landing size |
| Standard manual centre-pivot (780 x 980) | £1,000 to £1,450 | MK04. The most common size fitted |
| Large manual centre-pivot (1140 x 1180) | £1,200 to £1,700 | SK06. Two people to lift it in |
| Top-hung | £1,250 to £1,800 | Opens clear of the head, better for a low install |
| Electric or solar (INTEGRA) | £1,500 to £2,000 | Remote or rain-sensor opening. Needs power unless solar |
Supplied and fitted per window, replacing an existing unit of the same size. A new opening, or scaffolding for access, is extra. Guide prices, not quotes.
Velux window cost by number of windows
These are the guide rate multiplied out. A single window visit tends to land toward the top of each range and several windows in one visit toward the bottom, because the access and setup cost is shared across them rather than charged once per window.
| Job | Windows | Typical total |
|---|---|---|
| One window, straight swap | 1 window | £900 to £2,000 |
| Two windows | 2 windows | £1,800 to £4,000 |
| Loft conversion, three windows | 3 windows | £2,700 to £6,000 |
| Whole roof, five windows | 5 windows | £4,500 to £10,000 |
Totals are the guide rate of £900 to £2,000 per window, supplied and fitted applied to each size. Indicative, not quotes.
What's included in the price?
Typical Velux window prices include:
- The roof window and a matching flashing kit
- Removing the old unit or forming the new opening
- Fitting, sealing and weatherproofing
- Internal making good around the reveal
What changes the price?
The things that move Velux window prices most:
Like for like swap versus a new opening
Window size and how it opens (manual, electric or solar)
Whether scaffolding is needed for access
Glazing spec and any plastering to finish
Does where you live change the cost?
In London, a Velux window typically costs around £1,800 per window, supplied and fitted, about 30% above the UK average of £1,400. In the North, Scotland and Wales the guide figure is nearer £1,300.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £900 | £1,400 | £2,000 |
| London | £1,200 | £1,800 | £2,600 |
| South East / South West | £1,000 | £1,600 | £2,300 |
| North / Scotland / Wales | £830 | £1,300 | £1,800 |
Guide prices per window, supplied and fitted, scaled with the same regional multipliers as the calculator. Not quotes.
Velux window cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £770 | £1,200 | £1,700 |
| Birmingham | £880 | £1,400 | £2,000 |
| Bristol | £990 | £1,500 | £2,200 |
| Cardiff | £850 | £1,300 | £1,900 |
| Edinburgh | £880 | £1,400 | £2,000 |
| Glasgow | £810 | £1,300 | £1,800 |
| Leeds | £840 | £1,300 | £1,900 |
| Liverpool | £830 | £1,300 | £1,800 |
| London | £1,200 | £1,800 | £2,600 |
| Manchester | £860 | £1,300 | £1,900 |
| Newcastle | £810 | £1,300 | £1,800 |
| Sheffield | £830 | £1,300 | £1,800 |
City guide estimates, scaled by local labour costs. Indicative averages for Velux window, not quotes.
Labour is almost all of the difference, so London and the South East add around 20 to 30 percent.
Common questions
Is there a Velux window price list?
Not an official one that covers fitting. Velux publish unit prices for the windows themselves, but the fitting is quoted by whoever does the roof work, so the installed price is what varies. As a working guide on our figures, a fitted Velux runs £900 to £2,000 per window. Start from a like-for-like swap at the lower end, then add £250 to £600 per window if a brand new opening has to be cut rather than swapped, £300 to £800 for an electric or solar opening instead of manual, and £400 to £900 if the roof needs scaffolding for access. Those add-ons stack, which is why a straightforward swap and an awkward new opening sit at opposite ends of the range.
How much is it to replace a Velux window like for like?
A straight swap into an existing opening with a mid-range window typically costs £750 to £1,200 supplied and fitted, because the hole is already there. A small budget window can come in a little lower.
How much does it cost to replace just the glass in a Velux window?
Replacing only the glazing pane is much cheaper than a whole new window. The replacement pane itself is around £115 to £215 supplied for common sizes, and with a specialist to fit it you are usually looking at £200 to £500 all in for a straightforward misted or cracked double-glazed unit. A large pane, an older pre-2014 window, or awkward roof access can push it higher, and if the frame or opening mechanism is worn too, a full like-for-like replacement at £750 to £1,200 is often the better value.
How much does an electric or solar Velux cost fitted?
An electric or solar opening Velux usually adds £300 to £800 over the manual version, so expect roughly £1,300 to £2,500 fitted depending on size.
Do I need planning permission for a roof window?
Usually not: roof windows are permitted development provided they do not project more than 150mm from the roof plane or sit higher than the ridge. Conservation areas and listed buildings are the exceptions, and side-facing windows may need obscure glazing. Building regulations still apply to the opening and any structural trimming.
Is there a cheaper alternative to Velux?
Yes: Velux is the brand people use generically, and rival roof window brands can cost meaningfully less for a similar specification, with the fitting cost the same either way. Compare the glazing spec and the warranty rather than the badge, and check blinds and flashing kits are available for whichever brand you pick.
How long does it take to fit a Velux window?
A like-for-like swap is typically half a day to a day per window. Cutting a brand-new opening, with the structural trimming and internal finishing that involves, runs 1 to 2 days and adds £250 to £600 per window to the price, plus scaffolding if access needs it.
Can I fit a Velux window myself?
In theory yes on an unregulated job, but in practice it is a hard DIY task. You are cutting into the roof, working at height, and getting the flashing watertight, and a leak here is expensive to put right. Buying the window yourself saves on the markup, but at £900 to £2,000 supplied and fitted, most of that is skilled labour you cannot easily replace. Worth it only if you are experienced with roofing.
Does a Velux window add value when you sell?
It rarely pays back the full outlay. At £900 to £2,000 a window, a loft or dark room made brighter does help a sale and can make a room feel usable, which matters more than the pound figure. Treat it as something you fit to enjoy the light and space while you live there, not as an investment that returns what it cost.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.