Single and double storey extensions in Leytonstone. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions on Leytonstone's Victorian and Edwardian terraces, making the most of the side returns and rear gardens these houses were given. With over 30 years of building across E11 and Waltham Forest, we handle the foundations, the steelwork, the roof and the fit-out as one continuous project.

The side return, that narrow strip of yard alongside the rear closet wing, is the classic Leytonstone extension. Filling it in widens a cramped galley kitchen into a proper open-plan kitchen-diner that runs the full width of the house. We dig and pour the new foundations, tie into the existing brickwork, and install a steel beam where the old external wall comes out, all with a glazed roof or lantern to bring the light in.
Many single-storey rear and side-return extensions in E11 fall under permitted development, which means no planning application to Waltham Forest Council, though the work still needs building regulations approval. Larger schemes, wrap-arounds or anything to a property in a conservation area may need full planning permission. We assess your specific house first and tell you honestly which route applies, then handle the drawings and the submissions either way.
Families settling near Epping Forest and Lloyd Park often want more than a single storey, adding a bedroom or en-suite above a rear extension. A double-storey addition needs deeper foundations and careful thought about how the new roof meets the existing one, and it is more likely to require planning permission from Waltham Forest Council than a modest ground-floor build. We manage the planning stage, the party wall notices and the whole build.
Because the shared party wall runs the full height of these terraces, a two-storey extension almost always triggers the Party Wall Act with one or both neighbours. We serve the notices early so the timescales do not hold up the build. Steel beams support the new openings between old and new, the engineer sizes everything, and building control inspects the foundations, the structure and the insulation as the work rises.
GS Renovation gives Leytonstone homeowners one team for the entire extension, from the first sketch and the planning or permitted development check to the finished, decorated room. We know how E11 terraces sit on their plots, how the side returns behave and how to keep neighbours onside. Thirty years in Waltham Forest means fewer surprises and a build that finishes properly.
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
The cost of house extensions in Leytonstone depends on the size of the property, the specification and the scope of work. GS Renovation provides free, detailed and itemised quotations for every Leytonstone project. Call 07472 424 226 or email info@gsrenovationltd.co.uk for a no-obligation 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.
Timescales for house extensions in Leytonstone vary with the size and complexity of the job. After our survey we give you a realistic schedule and keep you updated at every stage of the project.
GS Renovation's team brings over 30 years of hands-on experience to house extensions and wider building work across Leytonstone and the surrounding area. We offer free quotes, a dedicated project manager, full insurance, building control compliance where required, and comprehensive aftercare.
Many single-storey rear extensions in Leytonstone 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 Leytonstone'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.
Often not. Many single-storey rear and side-return extensions on E11 terraces fall within permitted development, so no planning application to Waltham Forest Council is required, though building regulations approval still is. It depends on the size, the height and whether your home is in a conservation area or has had permitted development rights removed. We check your specific property before any work begins.
We do. GS Renovation covers all of Leytonstone and the E11 area and the wider North East London. Call 07472 424 226 and we will confirm we work on your road.
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 Leytonstone. 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 Leytonstone and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Leytonstone.
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