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

Mansard Loft Conversion in NW London

Full-width mansard conversions that maximise headroom and floor area, designed for conservation area approval across NW London's premium postcodes.

Typical cost: £55,000–£100,000

Select Your Area

We provide mansard 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

    Structural Survey and Feasibility

    A RIBA-chartered architect assesses the existing roof structure, party wall positions, and roof pitch to confirm mansard viability. We take measurements, review planning history, and identify any conservation area or listed building constraints that will shape the design brief before a single drawing is produced.

  2. 2

    Pre-Application Planning Consultation

    We engage the local planning authority's pre-application service — particularly important in conservation areas where officer feedback shapes the final scheme. This stage prevents abortive drawings by establishing the design envelope the authority will accept before submitting a formal application.

  3. 3

    Architectural Design and Planning Application

    Our RIBA architect produces full planning drawings including elevations, floor plans, and a Design and Access Statement addressing the conservation area context. We submit to the LPA and manage the eight-to-thirteen-week determination period, responding to any requests for further information.

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