Covering Hertfordshire
Our coverage across Hertfordshire includes Watford, Hemel Hempstead, Stevenage and St Albans.
Homes in the East of England
Across the East of England, newer estates often have integral garages and room for rear extensions, while older towns have Victorian terraces and conservation areas that shape what can be built.
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
- Extended ridge and roof structure
- Staircase, insulation, plastering and electrics
How much does a hip-to-gable loft conversion cost in Hertfordshire?
What hip-to-gable loft conversions typically cost. These are guide ranges; the written quote for your house replaces them.
| 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 |
How is a hip-to-gable loft conversion approved in Hertfordshire?
English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.
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.
How does the project run?
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- 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.
How long does it take?
About 9 to 13 weeks on site.
Can you visit a house in Hertfordshire 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.
Other towns nearby
- Hip-to-gable loft conversions in Watford
- Hip-to-gable loft conversions in Hemel Hempstead
- Hip-to-gable loft conversions in Stevenage
- Hip-to-gable loft conversions in St Albans
- Hip-to-gable loft conversions in Welwyn Garden City
- Hip-to-gable loft conversions in Cheshunt
- Hip-to-gable loft conversions in Hatfield
- Hip-to-gable loft conversions in Bishop's Stortford
- Hip-to-gable loft conversions in Borehamwood
- Hip-to-gable loft conversions in Hitchin
- Hip-to-gable loft conversions in Hoddesdon
- Hip-to-gable loft conversions in Letchworth Garden City
- Hip-to-gable loft conversions in Harpenden
- Hip-to-gable loft conversions in Bushey
- Hip-to-gable loft conversions in Hertford
- Hip-to-gable loft conversions in Rickmansworth
- Hip-to-gable loft conversions in Potters Bar
- Hip-to-gable loft conversions in Berkhamsted
Learn more about hip-to-gable loft conversions, or see every project we cover in Hertfordshire.

