South Hampstead · NW6 · London Borough of Camden

House Extensions in South Hampstead, NW6

House extensions in South Hampstead — rear and side-return extensions into the villas’ private gardens, designed for the South Hampstead Conservation Area and Camden, with structure and build in-house.

Speak to the studio directly: 020 8054 8756

One Studio. One Contract. One Team.
Architects, Engineers, Surveyors & Builders under one roof
Camden planningManaged
Structural engineeringIn-house
Party wall mattersHandled
Listed & periodSpecialist
Fully insured£10M
North London studio250 Finchley Rd, NW3

Into the private garden, sympathetically done

Many South Hampstead villas have a real advantage when it comes to extending: a generous private rear garden. Unlike areas built around shared communal squares, the houses here typically own their gardens, so a single-storey rear or side-return extension to create a bright, garden-facing kitchen-dining room is genuinely on the table — subject to the conservation area.

Most of South Hampstead lies within the South Hampstead Conservation Area, which values consistent rear elevations and roof forms, so an extension needs Camden planning permission and a design that respects the original house and the neighbours’ daylight and outlook. Properties outside the conservation area may have more permitted-development scope, so the first step is to establish exactly where you stand.

We confirm what your house can take, design an extension that is both useful and consentable, engineer the structure and the opening back into the house, and build it through to a finished room — one contract from drawings to handover, with honest budgets in pounds sterling.

What shapes a South Hampstead house extension

South Hampstead’s private gardens make extending viable — the conservation area shapes how.

01

Private gardens

Villas typically own their rear gardens, so rear and side-return extensions are genuinely possible.

02

Conservation design

In the conservation area an extension needs Camden planning and a sympathetic, subordinate design.

03

Inside or outside the CA

Properties outside the conservation area may have more PD scope; we establish your position first.

04

Structure + party wall

Extending and opening up the rear means engineering and, on shared walls, party wall awards.

What a South Hampstead house extension includes

From a feasibility read to a finished garden room — under one team.

Feasibility

Establishing the garden, the conservation position and what can be built.

Design

A rear or side-return extension that suits the villa and the garden.

Planning & heritage

A Camden planning application and heritage-led design for the conservation area.

Structural design

Foundations, steel and the opening back into the house, with Building Control.

Party wall

Notices and awards on the shared walls with neighbours.

Glazing & roof

Rooflights and glazed doors that bring light and the garden in.

Fit-out & finishes

Kitchen or living fit-out, flooring and decoration.

Snagging & handover

Two-stage snagging and a clean handover.

Streets & gardens across NW6

We design and build rear and side-return extensions on South Hampstead villas with private gardens, across NW6.

Fairhazel GardensGoldhurst TerraceCompayne GardensCanfield GardensGreencroft GardensAberdare GardensBroadhurst GardensPriory RoadBelsize RoadLoudoun Road

South Hampstead sits within the London Borough of Camden — see our South Hampstead area page and North London refurbishment overview.

Questions clients ask before they start

Can I extend my South Hampstead house?

Often, yes — many villas have private rear gardens, so a single-storey rear or side-return extension is viable, subject to the conservation area and the neighbours. We assess and design it for consent.

Do I need planning permission?

In the South Hampstead Conservation Area, almost always — permitted-development rights are restricted, so an extension needs Camden planning. Outside the conservation area there may be more PD scope; we confirm your position.

What is a side-return extension?

Filling the narrow side return alongside the rear of the house to widen the ground floor into a single, light room. It works well on the period villas here.

Will neighbours be affected?

Extending and opening up the rear engages the Party Wall etc. Act 1996 where walls are shared. We manage the notices and awards.

What does a house extension cost?

It depends on size, structure and finish. We give an honest budget band in pounds sterling (GBP) after a feasibility visit.

More in South Hampstead, NW6

Start your South Hampstead house extension

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.

Call the studio020 8054 8756
North London studio250 Finchley Road, London NW3 6DN

Book a Refurbishment Consultation

Site visit · approvals read · outline budget band (GBP) · programme indication. No obligation.

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House Extensions Near South Hampstead

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