Full-floor mansard conversions to Notting Hill terraces — designed to match the established parapet line of the street and win RBKC consent, with structure and party wall in-house.
Speak to the studio directly: 020 8054 8756
A mansard rebuilds the roof as a steep, near-vertical front slope hidden behind the parapet, giving the largest usable floor of any loft conversion. On Notting Hill terraces that already carry a uniform mansard line — common across parts of the Ladbroke and Pembridge estates — a well-detailed mansard can be the natural way to add a full floor.
Where a terrace has no established mansard line, RBKC will often resist one that breaks the rhythm of the roofs. The deciding factor is the conservation area and the existing roofscape, so we study the whole terrace — not just your house — before proposing anything.
When a mansard is the right answer, we design it to match the neighbouring profiles, slate or lead the front slope correctly, and engineer the structure, staircase and fire strategy in a single contract.
A mansard lives or dies on whether it matches the established roofline of the terrace.
Where neighbours already have mansards, matching the line is straightforward; where they do not, RBKC usually resists.
The front slope must sit behind the parapet at the established pitch, slated or leaded to read as original.
A mansard needs a planning application and a heritage case showing it preserves the roofscape.
A mansard carries a full room, so it needs proper support, a compliant stair and a fire strategy — all in-house.
From a roofline study to a finished top floor — designed to match the terrace.
Surveying the terrace and parapet line to confirm a matching mansard is achievable.
Drawings and a heritage statement for a mansard that respects the roofscape.
Steel, ridge and floor structure for a full top floor, with Building Control.
Steep front framing, slate or lead, dormer windows and insulation.
A new compliant staircase integrated into the floor below.
Protected escape, fire separation and Building Regulations sign-off.
Notices and awards for the shared roof and walls of the terrace.
Bedroom suite or studio fit-out, two-stage snagging and handover.
We design and build mansard conversions where the terrace and conservation area support a matching roofline, across Notting Hill.
Notting Hill sits within the Royal Borough of Kensington & Chelsea — see our Notting Hill area page and South West London refurbishment overview.
Book a no-obligation consultation at 2 Eaton Gate in SW1, at our Hampstead studio, or at your property. We will give you an honest read on approvals, programme and budget band — in pounds sterling — before you commit.
Site visit · approvals read · outline budget band (GBP) · programme indication. No obligation.
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