Hip-to-gable loft conversions · Islington

Hip-to-gable loft conversions in Islington

We take on hip-to-gable loft conversions in Islington as a complete project: survey, drawings, planning or permitted development checks, building control and the construction itself.

Covering Islington

Islington sits 2 miles north-east of London, with Highbury 1 miles to the north and Holloway 1 miles to the north-west.

Homes in London

Terraced houses dominate many London neighbourhoods, so most projects involve shared walls, narrow access and a party wall process. Conservation areas are widespread, and some boroughs have their own mansard and basement guidance.

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.

  • Gable wall build in brick, block or render
  • Extended ridge and roof structure
  • Staircase, insulation, plastering and electrics

How much does a hip-to-gable loft conversion cost in Islington?

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 conversionsGuide 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

What approvals does a hip-to-gable loft conversion need in England?

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 Islington homeowners check first?

  • Matching old clay tiles can be difficult; reclaimed tiles are often used.
  • The new gable is usually rendered or built in matching brick.

How does the project run?

  1. Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
  2. We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
  3. Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
  4. Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Questions about a hip-to-gable loft conversion in Islington

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.

How do I get a price for hip-to-gable loft conversions in Islington?

Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.

Also covering

Learn more about hip-to-gable loft conversions, or see every project we cover in Islington.

Planning an extension, loft or new home?

Get a guide price in two minutes, then book a free site visit.

CallGet a quote