From the team behind Hampstead Renovations · Est. 2009 · Learn more

Hip-to-Gable Loft Conversion in NW London

Convert a hipped roof to a gable end to unlock the maximum usable floor area — the definitive loft conversion for semi-detached properties across NW London.

Typical cost: £45,000–£85,000

Select Your Area

We provide hip-to-gable loft conversion across NW London's premier neighbourhoods. Each area has specific planning rules and property characteristics — select yours for tailored information.

How It Works

  1. 1

    Hip Roof Assessment and Structural Feasibility

    We assess the existing hip roof geometry, rafter lengths, ridge position, and the gable wall below to determine whether a hip-to-gable conversion is structurally viable. Many semi-detached properties in NW London have the hip end adjacent to the shared wall — confirming party wall positions is critical at this stage.

  2. 2

    Planning Assessment and Neighbour Consultation

    Hip-to-gable conversions are visible from the side elevation, making them subject to planning consideration in conservation areas and Article 4 zones. We assess PD eligibility, advise on the planning route, and recommend early consultation with the adjoining semi-detached neighbour given the party wall and visual impact implications.

  3. 3

    Architectural Design and Planning Submission

    Drawings showing the proposed gable end elevation, new roof structure, and any dormer to the rear are prepared. In conservation areas a Design and Access Statement addresses how the gable end extension respects the character of the semi-detached pair. Planning is submitted and managed through to determination.

Select an area above to see the complete 8-step process with area-specific planning guidance.