Single and double storey extensions in Camden. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Camden, working with the Georgian, Regency and Victorian homes of Hampstead, Highgate and Kentish Town. With over 30 years in NW1, NW3, NW5, N6 and N7, we handle groundworks, steel, roofing and the full fit-out, and we manage the planning and party wall side from the start.

The classic Camden project fills the side return of a Victorian terrace in Kentish Town or extends into the rear garden of a townhouse near Regent's Park. We dig and lay foundations to suit the ground and any nearby trees, install the steel beams that carry the existing rear wall, and build up in matching brick before fitting the roof, glazing and services. The result is a bright kitchen-diner that respects the house.
Whether an extension is permitted development or needs a full planning application depends entirely on the property. A modest single-storey rear extension may fall under permitted development, but homes in Camden's conservation areas, and any listed building, usually need planning permission and sometimes listed building consent from Camden Council. We assess your specific address before design so there are no surprises later.
Camden's period terraces sit on tight plots with shared boundaries, so most extensions here engage the Party Wall Act. Where we excavate near or build off a party wall in NW5 or N19, notice must be served on adjoining owners and a schedule of condition agreed. We build the foundations, damp proofing and drainage correctly for the age of the property and its solid-wall construction.
Above ground we tie the new structure into the original brickwork, form the openings with engineer-designed steel, and weatherproof the roof, whether that is a flat warm roof with rooflights or a pitched roof to match a neighbouring return. Building control inspects the foundations, steel, insulation and drainage at each stage, and we complete the full internal fit-out ready to use.
Camden homeowners choose GS Renovation because we run the whole extension as one job, from foundations and steel to the finished kitchen, and we navigate Camden Council planning, conservation and party wall matters properly. With 30+ years across NW1, NW3 and N6, we build extensions that suit period homes, pass building control cleanly and add lasting space and value.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great attention to detail. I've already recommended him to others.
Splendid job on our new kitchen refurb, including new flooring, moving the services, installing RSJ and preparing space for new back doors… George was always friendly, communicative and has an excellent attention to detail, ensuring everything is finished to a high standard.
Giorgio is an excellent and intelligent workman, and with very reasonable prices!… He paid a lot of attention to detail that is not common at all, and the final result was immaculate. Highly recommended!
FAQ
There is no fixed price for house extensions in Camden, because so much depends on your property and what you want to achieve. We survey first, then provide a transparent written quotation. Contact GS Renovation on 07472 424 226 for a free estimate. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
We will give you an honest timescale for house extensions in Camden after surveying your home. Most projects run on a clear weekly programme, and we tell you up front about any lead times on materials or approvals.
GS Renovation knows Camden's homes and how to renovate them properly. We handle the structure, the services and the finishes, deal with building control for you, and leave you with work that is certified, guaranteed and built to last.
Many single-storey rear extensions in Camden fall under permitted development, but side returns, double-storey extensions and work in conservation areas usually need full planning permission. We assess your property and manage both the planning application and building control.
Yes. A large share of Camden's homes are period, Georgian and listed properties, and we renovate them regularly. We plan each house extensions around their particular characteristics, such as conservation and listed-building rules, solid walls and original period features, so the result suits the building and meets building control.
It depends on your property. A small single-storey rear extension can sometimes be permitted development, but if your home is in a Camden conservation area or is listed, you will usually need planning permission from Camden Council and possibly listed building consent. We check your address and constraints first, then handle the application and any party wall notices alongside the build.
We cover the whole of Camden and the NW1 area and the surrounding North London. If you are nearby and not sure, just call 07472 424 226 and we will tell you straight away.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Camden. Explore what else we do locally:
Steel beam installation, RSJ and structural alterations.
Safe load-bearing wall removal with steel beam support.
Structural alterations, new openings and steel support.
Chimney breast removal with gallows bracket or beam support.
Open-plan kitchen, diner and living conversions.
Full refurbishments and whole-house renovations.
Bespoke kitchen design and installation.
Luxury bathroom and wet-room refurbishment.
Same Service, Nearby Areas
We carry out house extensions across Camden and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Camden.
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