Single and double storey extensions in Leyton. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Leyton, tailored to the bay-fronted Victorian and Edwardian terraces that fill the E10 streets. Over 30+ years we have added rear, side-return and wrap-around extensions to these homes, handling foundations, steelwork, roofing and full fit-out as one managed project.

The typical Leyton terrace has a narrow side return running alongside the rear closet wing, a strip of dead outdoor space that is perfect to build into. Filling the side return and pushing out at the back turns a dark, cut-off kitchen into a bright open-plan kitchen-diner spanning the full width of the house. It is the single most popular extension we build in E10.
These projects start with proper foundations and groundworks, then steel beams to carry the original rear wall once it comes out. We build up the walls, form the new roof, often with a glazed lantern or rooflights, and complete the internal fit-out. Because you share walls with neighbours on both sides, party wall matters usually come into play, and we guide you through the notices before we break ground.
Many single-storey rear and side-return extensions in Leyton fall under permitted development, meaning no full planning application is needed provided the size, height and materials stay within the limits. Others, particularly larger or double-storey schemes, do need planning permission from Waltham Forest Council. We assess your property honestly at the outset and tell you which route applies rather than assuming.
Whichever path your extension takes, the building work itself must meet building regulations, and building control inspects the foundations, steelwork, insulation and drainage as the job progresses. We manage those inspections and the sign-off for you. For homes near the conservation interest around Walthamstow Village, extra care over design and materials pays off, and we plan for it from the first drawing.
Leyton homeowners choose GS Renovation for extensions because one team handles the whole build, from foundations and steel to roof and finish. We know how these E10 terraces are put together, advise clearly on permitted development versus a Waltham Forest planning application, manage party wall notices and building control, and keep an occupied home tidy throughout the works.
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 Leyton, 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.
Timescales for house extensions in Leyton 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.
Because we manage every trade in-house, your Leyton project stays consistent and accountable from first fix to finish. Add transparent pricing, full insurance and real aftercare, and it is easy to see why Leyton clients recommend us.
Many single-storey rear extensions in Leyton 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 Leyton'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 and side-return extensions in Leyton are permitted development, so no full planning application to Waltham Forest Council is required if you stay within the size and height limits. Larger or double-storey schemes usually need planning permission. Either way the work must meet building regulations with building control sign-off. We check your specific case before starting.
We cover the whole of Leyton and the E10 area and the surrounding North East 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 Leyton. 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 Leyton and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Leyton.
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