Single and double storey extensions in Kentish Town. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions throughout Kentish Town, adding space to the Victorian and Edwardian terraces that fill NW5 between Hampstead Heath and the British Library. Drawing on more than 30 years in North London, we build rear, side-return and wrap-around extensions, handling foundations, steel, roof and full fit-out as a single managed project.

The side return is the classic Kentish Town extension. Most bay-fronted terraces here have a narrow alley of wasted ground beside the rear closet wing, and filling it transforms a dark galley kitchen into a wide open-plan kitchen-diner. We dig and pour new foundations next to the existing wall, install the steel to carry the old external wall, tie the new roof into the closet wing and rebuild so the finished space feels original rather than bolted on.
Working in tight NW5 back gardens with limited rear access takes planning. We often barrow materials through the house or over neighbouring boundaries, protect the existing brickwork and manage spoil removal carefully on residential streets. Because a side return usually meets a shared boundary, party wall agreements with the neighbours are part of the job, and we help you serve the notices and appoint surveyors where they are needed.
Whether your Kentish Town extension is permitted development or needs a full planning application depends on the property. Many single-storey rear extensions fall under permitted development rights, but those rights are removed or restricted on flats, on homes within a Camden conservation area, and on any listed building, of which NW5 has plenty. We assess your specific house early so you know which route applies before any design work is committed.
Where a planning application to Camden Council is required, we work alongside your architect on the drawings and guide the build to match exactly what is approved. Separately, every extension needs Building Regulations sign-off covering foundations, structure, insulation, drainage and fire safety. We keep planning and building control clearly apart, arrange the inspections at each stage and hand over the certificates at completion.
Kentish Town owners choose GS Renovation because one team takes the extension from foundations to final coat, including the steel, the roof, the party wall matters and the fit-out. We understand Camden's conservation constraints and NW5 access challenges, we price transparently, and thirty years of local terraces means fewer surprises and a build that lasts.
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
Every Kentish Town project is priced on its own merits, as the cost of house extensions varies with the size, specification and condition of the home. We give a clear, itemised quote up front with no obligation. Call 07472 424 226 for an estimate tailored to your property. 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.
Most house extensions projects in Kentish Town take between two and eight weeks depending on the scope and whether structural work is involved. We provide a clear programme before work begins so you know exactly what to expect.
GS Renovation knows Kentish Town'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 Kentish Town 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 Kentish Town's homes are Victorian and Edwardian terraced properties, and we renovate them regularly. We plan each house extensions around their particular characteristics, such as solid brick walls, rear closet wings, side returns and original period features, so the result suits the building and meets building control.
It depends on the property. Many single-storey rear extensions are permitted development, but those rights are often removed for flats, for homes in a Camden conservation area, and for listed buildings, all common in NW5. We check your specific house first so you know whether a planning application to Camden Council is needed or whether permitted development applies before design begins.
Absolutely. Our team works right across Kentish Town and the NW5 area and neighbouring parts of North London. Get in touch on 07472 424 226 to check coverage for your address.
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 Kentish Town. 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 Kentish Town and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Kentish Town.
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