Hip-to-gable loft conversions · Streatham

Hip-to-gable loft conversions in Streatham

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

Covering Streatham

We work in Streatham (SW16) and the places around it, including Mitcham, Brixton and Wimbledon.

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 do you get with 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.

  • Volume calculation and planning check
  • Staircase, insulation, plastering and electrics
  • En-suite and fire-protected escape route

What will a hip-to-gable loft conversion cost?

Use these ranges to budget for hip-to-gable loft conversions; the survey turns them into a fixed price for the agreed specification.

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

Planning and building rules in Streatham

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 Streatham homeowners check first?

  • Matching old clay tiles can be difficult; reclaimed tiles are often used.
  • Scaffolding goes up on the side of the house, which may need a neighbour’s agreement.

How does the project run?

  1. Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
  2. Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
  3. Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
  4. We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.

Your questions answered

How long does it take?

About 9 to 13 weeks on site.

Will the roof tiles match?

We match the tiles as closely as possible, using reclaimed tiles where the originals are no longer made.

Who deals with the council for a project in Streatham?

We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.

Also covering

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

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