What a loft conversion costs in Glasgow
By Ajay Singh. Published 30 October 2026.
In Glasgow, published prices run from about £18,000 for a simple rooflight conversion to £66,000 for a mansard. A dormer, the most common choice, is put at £33,000 to £56,000. MyJobQuote's average across all types is about £42,000. Your own price will depend on the roof, so use these to sanity-check a quote, not to set one.
Cost by type of conversion
| Type | Glasgow (MyJobQuote, October 2026) | UK, 30 m² unless stated (MyJobQuote, October 2026) | Time on site (MyJobQuote) |
|---|---|---|---|
| Rooflight (Velux) | £18,000–£36,000 | £14,000–£22,000 (20 m²) | 4–6 weeks |
| Dormer | £33,000–£56,000 | £34,500–£51,000 | 6–9 weeks |
| Hip-to-gable | £42,000–£58,000 | £42,000–£60,000 | 7–9 weeks |
| L-shaped dormer | £48,000–£62,000 | £50,000–£60,000 | 8–10 weeks |
| Mansard | £48,000–£66,000 | £45,000–£75,000 | 8–12 weeks |
Sources: MyJobQuote, Loft Conversion Cost in Glasgow (9 October 2026), and MyJobQuote's UK loft conversion guide (21 October 2026), both from quotes given on its platform.
Bungalows get their own mention in the UK guide, with a typical cost of £45,000. It says a bungalow can often roughly double its living area, so check how much floor a quote is really for before you compare it with these.
The extras
Ask whether each of these is in the quote. MyJobQuote lists them as costs to think about on top of or within the job, and they're where two quotes tend to differ most.
| Item | Typical cost |
|---|---|
| Architectural drawings | £850–£1,500 |
| Structural engineer's calculations | £400–£1,000 |
| Building warrant | £565–£1,035 |
| Planning fee, if needed | £371 |
| Shared wall or boundary matters | £800–£1,500 |
| Scaffolding | £1,000–£1,500 |
| Staircase | £2,000–£5,000 |
| Electrical work | £3,000–£5,000 |
| Plumbing work | £2,000–£4,500 |
| Plastering | £2,000–£4,000 |
| Flooring | £1,500–£3,000 |
| Decorating | £1,500–£2,500 |
| Fire doors | £250–£500 per door |
| En-suite, added to any type | £5,000–£12,000 more |
Source: MyJobQuote's Glasgow guide (9 October 2026). Warrant fees depend on the value of the work, as mygov.scot explains. Check the current planning fee with your council.
The UK guide's example of a 30 m² dormer at £37,000 is also worth seeing: £8,800 for project management, £6,400 for roof coverings, £4,400 for the roof structure, £3,200 for steelwork and £3,000 for scaffolding. That scaffolding figure is about double the top of the Glasgow range above, which shows why you should get these items priced for your house. The guide also warns about costs that only turn up once work starts, such as asbestos or structural repairs, and puts asbestos removal from a roof at around £2,750. Keep some money back, particularly on an older roof.
What moves the price
- The roof structure. A trussed roof needs more time, labour and materials to convert than a traditional cut roof, MyJobQuote says. This is often the biggest single surprise.
- Head height. Low height can mean a larger dormer, or more structural work to gain the room you need.
- The stair. On a tight landing, a stair may mean moving a wall or losing a cupboard, and that's more than the cost of the stair.
- Fire safety work. Fire doors and protection to the stair are a real cost on a typical two-storey house. Our suitability guide explains why.
- Access and parking. A skip or scaffold on the road needs a council permit. MyJobQuote notes Glasgow's permits can take at least 28 working days, so don't leave that to the last minute.
- Bathroom plumbing. A soil pipe has to get out of the roof and down to a drain. The distance matters.
- Design approval. Going through planning adds time and a fee, and it may change what you can build.
How to compare quotes
- Give every firm the same brief: what rooms, what bathroom, what finish.
- Get it in writing, broken down by item, with clear exclusions.
- Check who pays for drawings, calculations and the warrant, and who applies.
- Ask what happens if they find something once the roof is open.
- Check the payment stages. Don't pay much up front, and keep a final payment for after the completion certificate.
- Be wary of any price far below these ranges, and ask what's been left out.
Where the Glasgow and UK tables disagree, don't read too much into it. Treat the spread as honest uncertainty. A real price needs someone to get up into your loft.
Rules, dates and prices on this page were last checked on 30 October 2026.
Common questions
Can I convert a loft for £10,000?
Not as a proper room with a warrant, going by these figures. The lowest published Glasgow starting point we found is £18,000 for a rooflight conversion. Boarding for storage is a different thing altogether.
Why do the Glasgow and UK figures differ?
They're separate tables, though both come from quotes on MyJobQuote's platform. The UK one states a floor size for each type: 20 m² for a rooflight conversion and 30 m² for the rest. Nobody behind either table has seen your roof.
Does a loft conversion add value?
It can, but we wouldn't plan on a percentage. MyJobQuote's UK guide says up to 24%, citing Nationwide, for a three-bed, one-bath home that gains a large double bedroom and a bathroom. Ask a local estate agent what an extra bedroom would mean on your street, and whether the conversion would push you past what the street will bear.
Is VAT included?
Don't assume so. Ask. A quote should say whether VAT is included, and a small firm may not be VAT registered at all, which changes the comparison.
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