Loft Conversion Cost in Brighton: 2026 Price Guide
08 Aug 2026
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Brighton's Regency townhouses, generally taller with steeper original pitches than a typical Victorian terrace, often suit a loft conversion particularly well - though their height also means scaffolding and access costs can run higher than a standard two-storey terrace conversion elsewhere in the city.
| Type | Typical cost |
|---|---|
| Rooflight (Velux) conversion | £21,000-£36,000 |
| Rear dormer conversion | £36,000-£52,000 |
| Hip-to-gable or mansard | £52,000-£77,000 |
The conservation factor
North Laine, Kemp Town and parts of the seafront's conservation area status mean loft conversions here face closer scrutiny than in Hanover or Preston Park - a rear dormer that would be routine permitted development elsewhere in the city can need full planning permission close to the historic core.
A Party Wall Agreement under the Party Wall etc. Act 1996 is required wherever the conversion affects a shared wall, which applies to most of Brighton's terraced housing across Hanover, North Laine and Kemp Town.
What's different in Hanover
Hanover's steep hillside streets add real cost to scaffolding and material access compared with flatter parts of the city - worth getting a site visit before assuming a quote based on a flat-street conversion elsewhere in Brighton applies.
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Frequently asked questions
How much does a loft conversion cost in Brighton?
A rooflight (Velux) conversion runs £21,000-£36,000, a rear dormer £36,000-£52,000, and a hip-to-gable or mansard conversion £52,000-£77,000.
Why do loft conversions cost more in North Laine or Kemp Town?
Conservation area status means closer scrutiny than in Hanover or Preston Park - a rear dormer that would be routine permitted development elsewhere in the city can need full planning permission close to the historic core.
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