Covering Cornwall
Our coverage across Cornwall includes Redruth, Falmouth, St Austell and Truro.
Projects in Cornwall are taken on by arrangement, and any travel and accommodation costs for the team are shown openly in the quote.
Homes in the South West
Homes in the South West range from coastal and rural properties in stone and slate to city terraces and modern estates, so extensions are designed to match the local materials.
What does a hip-to-gable loft conversion involve?
Hipped roofs are common on 1930s semis and have little usable volume until the hip is squared off. We rebuild the gable in brick or block, extend the roof structure, form the rear dormer and finish the new floor, keeping the front roof slope looking as close to the original as possible.
- Volume calculation and planning check
- Gable wall build in brick, block or render
- Rear dormer and roof coverings to match
How much does a hip-to-gable loft conversion cost in Cornwall?
Guide prices for hip-to-gable loft conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| Hip-to-gable loft conversions | Guide price incl. VAT |
|---|---|
| Hip-to-gable with rear dormer | £60,000 to £80,000 |
| Double hip-to-gable (detached house) | £70,000 to £95,000 |
Planning and building rules in Cornwall
Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.
In England many loft conversions are permitted development: the extra roof volume must stay within 40 m³ on a terraced house or 50 m³ on a semi or detached house, nothing can sit higher than the existing ridge, no dormer can face a road on the main elevation, and side windows must be obscure-glazed and non-opening below 1.7 m.
What should I think about before starting?
- The new gable is usually rendered or built in matching brick.
- Scaffolding goes up on the side of the house, which may need a neighbour’s agreement.
From first call to completion
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
Hip-to-gable loft conversions: common questions
Does a hip-to-gable need planning permission?
In England it is often permitted development if the total extra volume stays within 50 m³ for a semi or detached house.
Will the roof tiles match?
We match the tiles as closely as possible, using reclaimed tiles where the originals are no longer made.
Can you visit a house in Cornwall to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Also covering
- Hip-to-gable loft conversions in Redruth
- Hip-to-gable loft conversions in Falmouth
- Hip-to-gable loft conversions in St Austell
- Hip-to-gable loft conversions in Truro
- Hip-to-gable loft conversions in Bodmin
- Hip-to-gable loft conversions in Helston
- Hip-to-gable loft conversions in Launceston
- Hip-to-gable loft conversions in Bude
Learn more about hip-to-gable loft conversions, or see every project we cover in Cornwall.

