Double-storey rear extensions to South Hampstead villas — adding space on two floors, designed sensitively for the conservation area, with structure, party wall and build under one team.
Speak to the studio directly: 020 8054 8756
A double-storey rear extension adds rooms on two levels in a single build — typically a larger kitchen-dining room below and a bedroom or bathroom above. For a South Hampstead family that needs real additional space, it is far more efficient than two separate projects, but it is also more visible and more sensitive than a single-storey scheme, and it depends on having a private rear garden to build on.
Massing is everything in a conservation area. A two-storey addition is read against the original villa and the neighbours, so Camden will scrutinise its height, depth and effect on daylight and outlook. The design has to feel subordinate and proportionate, not like a second house bolted on the back.
We confirm the garden allows it, design the extension to sit comfortably with the original building, make the planning case, engineer the structure and the larger openings, manage the party wall, and build it across both floors — one contract, honest budgets in pounds sterling.
A two-storey extension is judged on massing — height, proportion and impact on neighbours.
Two storeys are more visible than one, so the conservation-area case must be made with care.
The addition has to read as proportionate and secondary to the original villa.
Camden weighs the effect on neighbours’ daylight and outlook over two floors.
Larger openings and loads over two storeys need proper engineering and party wall awards.
From a sensitive, consentable design to a finished two-storey addition — under one team.
Designing a two-storey extension proportionate to the villa and the conservation area.
A Camden planning application and heritage-led case on massing and impact.
Foundations, steel and openings across two floors, with Building Control.
Notices and awards on the shared walls with neighbours.
Two-storey structure, roof and weathering to current standards.
Heating, plumbing and electrics across the new rooms.
Kitchen, bedroom or bathroom fit-out, flooring and decoration.
Two-stage snagging and a clean handover.
We design and build double-storey rear extensions on South Hampstead villas with private gardens, across NW6.
South Hampstead sits within the London Borough of Camden — see our South Hampstead area page and North London refurbishment overview.
Book a no-obligation consultation at our North London studio on Finchley Road, in Hampstead, 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.
Send Project DetailsThe same NW3 design-build team covers the neighbouring areas: