Single and double storey extensions in Redbridge. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Redbridge, adding space to the 1930s semis and interwar suburban houses that fill IG2, IG4, IG5 and E18. With over 30 years in the borough, we handle groundworks, steel beams, roofing and the full fit-out, and we advise honestly on whether your project is permitted development or needs planning permission.

The generous plots on many Redbridge streets suit both rear and side-return extensions, and the wider side access on a 1930s semi often makes a side or wrap-around addition realistic here in a way it rarely is on a tight terrace. A single-storey rear extension typically opens the kitchen onto the garden, while a double-storey addition can add a bedroom and en-suite above. Each starts with proper foundations and groundworks matched to the local clay subsoil.
Where the extension meets the existing house, we usually remove the rear wall and support the structure on a steel beam sized by the engineer. Party wall matters come into play whenever you build near or up to the boundary you share with the adjoining semi, so we serve the notices early. We then take the shell through to a finished room, with insulation, glazing, heating, electrics and decoration completed to building regulations.
Many single-storey rear extensions on Redbridge semis fall under permitted development, meaning you can build within set size limits without a full planning application. But it depends on the property. Homes near Wanstead Park or in a conservation area, corner plots, and larger double-storey schemes often need planning permission from Redbridge Council. We assess your specific house first, and where permitted development applies we recommend a lawful development certificate to record it.
Planning permission and building regulations are two separate approvals, and every extension needs building control regardless of the planning route. Building control checks the foundations, the structure, insulation, fire safety and drainage as the work proceeds. We manage both strands for you, from the drawings and the application to Redbridge Council through to the final sign-off, so you are left with a properly documented extension and no loose ends when it is time to sell.
Homeowners across Ilford, Wanstead and Woodford choose GS Renovation because we build the whole extension, from the footings to the final coat of paint, with one team accountable throughout. We handle the engineer, the party wall notices, the Redbridge Council submissions and building control, and 30+ years locally means we understand exactly how these interwar semis are built.
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
We price each Redbridge project individually, because the cost of house extensions depends on far more than floor area. After a free survey you receive a clear written breakdown with no hidden extras. Call 07472 424 226 or email info@gsrenovationltd.co.uk. 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.
A straightforward Redbridge project can be done in a couple of weeks, while a larger house extensions with structural work runs longer. We set out a realistic, stage-by-stage programme before we begin so there are no surprises.
GS Renovation's team brings over 30 years of hands-on experience to house extensions and wider building work across Redbridge 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 Redbridge 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 Redbridge's homes are 1930s and interwar properties, and we renovate them regularly. We plan each house extensions around their particular characteristics, such as cavity walls, regular original layouts and the generous plots that suit extending, so the result suits the building and meets building control.
It depends on your house. Many single-storey rear extensions on Redbridge semis are permitted development within the size limits, but corner plots, conservation areas near Wanstead Park, and double-storey schemes usually need planning permission from Redbridge Council. Either way, every extension needs building regulations approval. We assess your specific property, tell you which route applies, and handle the paperwork.
Yes. We work throughout Redbridge and the IG1 area, as well as the surrounding parts of East London. Contact us on 07472 424 226 to confirm we cover your street.
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 Redbridge. 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 Redbridge and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Redbridge.
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