How Much Does a Loft Conversion Cost? UK 2026 Price Guide
Calculate your 2026 loft conversion cost in seconds. UK price guide: Velux £20k, dormer £35k-£65k, mansard £55k-£85k. Free Yorkshire quote.
Loft Conversion Costs by Type (UK 2026)
- Velux (roof-light) conversion: £20,000–£32,000
- Rear flat roof dormer: £35,000–£50,000
- L-shaped dormer: £50,000–£65,000
- Hip-to-gable + rear dormer: £45,000–£70,000
- Mansard: £55,000–£85,000
Loft Conversion Cost in Yorkshire
Yorkshire build costs typically run 20-30% below London. Most dormer loft conversions in Harrogate, Leeds, York, Ripon, Wetherby and Knaresborough fall between £35,000 and £65,000.
Get in touch
Call 07526 739253 or 01423 638367.
Email enquiries@dormerking.uk.
Based in Knaresborough, North Yorkshire — serving Harrogate, Leeds, York, Ripon, Wetherby, Nidderdale and Pateley Bridge.