Single and double storey extensions in Putney. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions throughout Putney, working with the bay-fronted Victorian and Edwardian terraces, closet wings and side returns that define SW15. Drawing on more than 30 years of building experience, we handle the groundworks, the steel, the roof and the full fit-out so your extension is one continuous, accountable project.

The most popular extension in Putney fills in the side return, the narrow strip of yard alongside the rear closet wing, and often pushes out to the back as well. On these terraces that turns a cramped galley kitchen into a wide, open-plan kitchen-diner. The work involves new foundations dug clear of the neighbour's wall, steel beams to carry the existing structure, and a flat or glazed roof to bring in light where the return once cast shade.
Because you are typically building right up to the boundary, party wall matters almost always arise on these SW15 projects, and excavating near a neighbour's foundations triggers notice requirements under the Party Wall etc. Act. We coordinate the structural steel, the drainage that often runs through the closet wing footprint, and the render or brickwork so the new elevation sits comfortably against the original Victorian back addition.
Whether your Putney extension is permitted development or needs a full planning application depends on the property and its size. Many single-storey rear extensions on unlisted terraces fall under permitted development, but if your home is in one of Putney's conservation areas, is a flat, or has had permitted rights removed, you will need to apply to Wandsworth Council. Double-storey and wrap-around schemes far more often need permission, and we advise honestly on which route yours falls under.
Whatever the planning position, the structural side of the extension is governed by the building regulations, so foundations, beams, insulation, drainage and fire safety are all inspected by building control regardless. We can manage the drawings, the Wandsworth Council submission and the building control notices together, then carry out the groundworks, steelwork, roofing, glazing and internal fit-out as a single team from first dig to final decoration.
Putney homeowners choose GS Renovation because we take an extension from foundations to finished room without handing you between trades. We understand SW15 terraces, their closet wings and side returns, the party wall obligations that come with building to the boundary, and the difference between permitted development and a Wandsworth Council application. Thirty years of local experience keeps the project on track.
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
Pricing house extensions in Putney comes down to the size of the job, the specification you choose and the condition of the property. Rather than guess, we survey and give you a fixed, itemised quote you can rely on. Call 07472 424 226. 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 Putney 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.
Putney homeowners choose GS Renovation for reliability and quality. We are fully insured, building control compliant where needed, and bring over 30 years of hands-on experience to every house extensions project, with a single point of contact throughout.
Many single-storey rear extensions in Putney 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 Putney'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. Many single-storey side-return and rear extensions on unlisted Putney terraces are permitted development, but if your home sits in a conservation area, is a flat, or has had its permitted rights removed, you will need to apply to Wandsworth Council. We assess your specific property first, then handle the application if one is required and the building control sign-off in every case.
Yes. We work throughout Putney and the SW15 area, as well as the surrounding parts of South West 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 Putney. 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 Putney and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Putney.
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