Compare Loft Conversion Quotes — 3 Free, No-Obligation Quotes
A loft conversion in the UK typically costs £1,250–£1,600 per m² — around £30,000–£50,000 for a dormer, or from £20,000 for a simple Velux conversion. Tell us about your job and we’ll match you with up to 3 vetted, insured loft conversion specialists near you — compare loft conversion quotes side by side and pick the best value. 100% free, no obligation, and most quotes come back within 24 hours.
How to get the best loft conversion quotes
- Get three quotes and confirm the type (Velux, dormer, hip-to-gable or mansard) is the same in each.
- Check head height and structure first — a good firm will survey before quoting.
- Make sure Building Regulations, fire escape and staircase works are included in the price.
What to check before you book
Always get the quote in writing with a clear scope, and confirm the specialists is insured and offers a workmanship guarantee. Read recent customer reviews, check the quotes cover the same specification, and never pay a large deposit up front — tie payments to completed stages.
Typical loft conversion cost
A loft conversion in the UK typically costs £1,250–£1,600 per m² — around £30,000–£50,000 for a dormer, or from £20,000 for a simple Velux conversion.
| Option | Typical UK price (2026) |
|---|---|
| Velux / rooflight | £20,000–£35,000 |
| Dormer | £30,000–£55,000 |
| Hip-to-gable | £40,000–£65,000 |
| Mansard | £45,000–£75,000 |
Prices vary by spec, region and access. For the full breakdown see our loft conversion cost guide or try the loft conversion cost calculator.
Loft Conversion quotes — FAQs
How much does a loft conversion cost in the UK?
Usually £1,250–£1,600 per m² — about £30,000–£55,000 for a dormer, or from £20,000 for a Velux conversion. See the loft conversion cost guide.
How many loft conversion quotes should I get?
Three, all for the same conversion type and spec. All quotes through BestBuilders are free and no-obligation.
Do I need planning permission for a loft conversion?
Many fall under permitted development, but dormers and mansards on the front, or in conservation areas, often need permission. Your specialist will advise.
Ready to start? Get your 3 free loft conversion quotes → Or explore loft conversion services and find trusted loft conversion specialists near you.