A loft bedroom needs more than a staircase into the roof. At 61 Randall Avenue in Brent, the design combines a hip-to-gable conversion and rear dormer to create a bedroom with its own en-suite, useful headroom and space for furniture beneath the front roof slope.
Brent Council issued a certificate of lawfulness for the proposed loft works on 9 July 2026, under reference 26/1230. The certified scheme includes two front rooflights, chimney removal and replacement side glazing. It gives this NW2 home another bedroom while retaining the three bedrooms on the first floor.
Making the roof space work as a room
Changing the sloping hip to a gable creates additional space along the side of the roof. The rear dormer provides a more generous area at the back, where the bed and en-suite are positioned. Together, these changes make it possible to arrange the accommodation around usable standing space, rather than relying on floor area alone.
The front part of the bedroom extends beneath the retained roof slope. The plan shows space for a desk and seating, with low-level storage towards the eaves. Head-height lines on the drawing help distinguish the areas suited to circulation from the lower spaces that can accommodate storage. These relationships are an important part of our loft conversion design work in London.
A separate bedroom without losing one below
The new staircase rises from the first-floor landing, alongside the existing stair arrangement. That keeps access within the circulation space and allows the existing bedrooms and bathroom to remain in the layout.
At loft level, a small landing separates the stair from the bedroom. The en-suite is reached from the bedroom itself, creating more private accommodation away from the other bedrooms. For a household needing an additional sleeping space, the useful outcome is a room with its own washing facilities, rather than another bedroom dependent on the bathroom below.
Planning the staircase, doors and furniture together is central to our architectural design service. Here, it helps the new floor connect to the house without turning an existing bedroom into a passageway.
Daylight, privacy and the roof’s appearance
Two rooflights bring light into the front of the bedroom, complementing the rear dormer glazing. The dormer cheeks are specified with tiles to match the existing roof, while the familiar front bay windows and entrance remain part of the house’s appearance.
The side window beside the stair is a more sensitive detail. The certificate requires obscure glazing and restricts opening parts below 1.7 metres above the internal floor. The design therefore brings light to the circulation area while addressing privacy towards the side boundary.
What the certificate establishes
The certificate confirms the lawfulness of the specified proposed works under the permitted development route; it is not a householder planning permission. Matching materials, rooflight projection and the dormer’s relationship to the eaves are among the details set out in the decision. Our guide to permitted development explains why the precise design and its limits need checking.
The staircase, altered roof structure and supporting steelwork also need coordinated technical information. Our building regulations drawings service develops those details alongside the structural design. To explore a loft bedroom and en-suite for a home in Brent or NW2, arrange a call with our team.
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