Single and double storey extensions in Bow. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Bow, from single-storey rear additions to double-storey and wrap-around projects on the borough's Victorian and Edwardian terraces. Backed by 30+ years in E3 and the wider Tower Hamlets area, we handle foundations, steelwork, roofing and the full fit-out as one managed job.

The side return, that narrow strip beside the rear closet wing, is the classic space to reclaim on a Bow terrace. Filling it turns a dark galley kitchen into a wide, light kitchen-diner that runs the full width of the house. The work involves new foundations along the boundary, a steel beam to carry the existing rear wall, and a roof that often includes rooflights or glazing to draw daylight deep into the plan.
Because the extension sits against the boundary with your neighbour, party wall matters almost always apply and we coordinate around the party wall award as part of the project. We match new brickwork sympathetically to the original Victorian stock and tie the groundworks in around the closet wing drainage. Every element, from the footings to the final plaster, is inspected under the Building Regulations so your E3 extension is properly certified.
Whether your extension is permitted development or needs a full planning application depends on the property, the size and any restrictions on it. Many single-storey rear extensions on Bow terraces fall under permitted development, but larger projects, most double-storey work, and homes in a conservation area or with an Article 4 direction will need permission from Tower Hamlets Council. We assess this at the outset so there are no surprises later.
We prepare and submit the drawings, liaise with the council's planning team, and separately arrange building control, keeping the two processes clearly distinct. Planning governs what you may build and how it looks from outside; building regulations govern that it is structurally and thermally sound. On Bow's period terraces we design extensions that respect the streetscape while giving you the open, modern living space these homes often lack at the rear.
For a Bow extension you want one team carrying the whole job, and that is what we do: foundations, steel, roof, services and finish, plus the planning and party wall coordination around it. Thirty years on E3 terraces means we know how these houses are built, where the drains run and how Tower Hamlets Council assesses applications. Fixed scope, tidy site, certified result.
The kitchen has been fitted to the high standard. Saaid was polite, professional, tidy, he pays attention to a little details that make huge…
Very friendly and I am very pleased with the work he has done, also very clean worker and enthusiastic about his work. Can not fault this company!!!!…
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
FAQ
Not from us, though there are unknowns and we name them upfront. On an older Bow property house extensions can uncover wiring, timber or drainage that nobody could see at the E3 survey, and we tell you what we suspect before starting. Anything additional is priced and agreed in writing first. GS Renovation has never treated a surprise as a licence to inflate a Tower Hamlets invoice. Ring 07472 424 226 and GS Renovation will name the likely unknowns at your E3 address. 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.
It can, mostly because of what appears once the E3 property is opened up. Old wiring, poor previous alterations and timber decay all surface during house extensions in Victorian and Edwardian terraced homes, and each adds days if it has not been allowed for. GS Renovation flags the likely candidates at the Bow survey. Anything found is costed and programmed before the Tower Hamlets work continues. The Bow programme is revised in writing before any further Tower Hamlets work proceeds.
You get the Tower Hamlets Council completion certificate, the guarantee and a number that still answers. Installations carry a five year guarantee, and if something needs attention at your E3 property after house extensions are signed off you reach the same people who did the Bow work. GS Renovation does not route aftercare through a call centre. Nothing about that is a brochure line. Ring 07472 424 226 whenever a Tower Hamlets issue arises. The guarantee covers Tower Hamlets installations for five years.
For a single-storey rear extension, commonly 3 metres on a terraced or semi-detached house and 4 on a detached one, with a larger allowance available under prior approval. Those rights are withdrawn in conservation areas and where Article 4 applies, so we confirm your E3 status with Tower Hamlets Council.
Investigation first, method second, price third. Assuming how a Victorian and Edwardian terraced Bow house is built is the commonest mistake on house extensions, so GS Renovation opens up carefully at E3 rather than relying on drawings. The sequence then protects the rest of the building. Weekly updates keep you ahead of what we find in Tower Hamlets. Ring 07472 424 226 and we will describe what house extensions have recently found in comparable E3 properties right across Tower Hamlets.
It depends on the property and the size. Many single-storey rear extensions on Bow terraces are permitted development, but larger or double-storey projects, and any home in a conservation area or under an Article 4 direction, usually need a planning application to Tower Hamlets Council. We check your specific situation first and handle whichever route applies alongside the building control side.
Bow certainly, and a good deal of the surrounding area. GS Renovation carries out house extensions throughout Tower Hamlets and into neighbouring parts of East London, including Bethnal Green. Familiarity with the local Tower Hamlets Council building control process is part of what you are buying. Email info@gsrenovationltd.co.uk and we will arrange a free survey at E3. Nothing is owed whether the work proceeds or not. Small jobs and full projects are treated on precisely the same basis.
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 Bow. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Bow and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Bow. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.