Velux Loft Conversion in NW London

Select Your Area

We provide velux 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

   Headroom and Rooflight Position Assessment

   We measure the existing ridge height and floor-to-ridge dimension to confirm minimum usable headroom — typically 2.2m at the ridge is the threshold for a viable Velux conversion. We also assess the roof pitch to determine optimal rooflight size and positioning for light and ventilation without compromising the roof structure.

2. 2

   Planning and Building Regulations Assessment

   Rear-facing rooflights may be permitted development in non-conservation areas. We confirm whether the property is in a conservation area or Article 4 zone, which would require planning permission for any rooflight. We also check whether the proposed loft use constitutes a material change of use requiring a full plans application to building control.

3. 3

   Structural Floor Assessment

   The existing ceiling joists are assessed for their ability to carry a habitable floor load (1.5kN/m²). In most Victorian and Edwardian properties the existing joists are undersized for floor loading and must be upgraded — we design new structural floor joists to sit alongside the existing ones before boarding takes place.

Select an area above to see the complete 7-step process with area-specific planning guidance.