Covering Milton Keynes
Alongside Milton Keynes, we also cover Bletchley (3 miles to the south), Leighton Buzzard and Buckingham.
Homes in the South East
Housing across the South East mixes inter-war semis, post-war estates and older cottages in villages and market towns, so rear and side extensions, hip-to-gable lofts and garage conversions all come up regularly.
What goes into a hip-to-gable loft conversion?
A hip-to-gable loft conversion rebuilds the sloping side (the hip) of a semi-detached or detached house roof as a vertical gable wall, extending the ridge and creating enough space for a staircase and rooms. It is usually combined with a rear dormer.
- Extended ridge and roof structure
- Staircase, insulation, plastering and electrics
- En-suite and fire-protected escape route
What is the guide price for a hip-to-gable loft conversion in Milton Keynes?
Indicative costs for hip-to-gable loft conversions. London and the South East usually sit towards the top of each range.
| 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 |
Do you need permission for a hip-to-gable loft conversion in Milton Keynes?
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 can affect a hip-to-gable loft conversion?
- 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
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
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.
Who deals with the council for a project in Milton Keynes?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Hip-to-gable loft conversions near Milton Keynes
- Hip-to-gable loft conversions in Bletchley
- Hip-to-gable loft conversions in Leighton Buzzard
- Hip-to-gable loft conversions in Buckingham
- Hip-to-gable loft conversions in Towcester
Learn more about hip-to-gable loft conversions, or see every project we cover in Milton Keynes.

