Single and double storey extensions in Teddington. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Teddington, working with the bay-fronted Victorian and Edwardian terraces, closet wings and side returns that define TW11. With more than 30 years in Richmond upon Thames, we take rear, side-return and wrap-around projects from foundations and steelwork through to the final fit-out, all under Richmond Council building control.

The classic Teddington extension fills the side return, the narrow strip of yard beside the closet wing, to widen a cramped Victorian kitchen into a proper open-plan space. We dig and pour foundations to suit the local ground, form the new walls and install a steel beam across the old rear opening so the room reads as one. A wrap-around scheme continues past the closet wing to add real depth, with rooflights bringing daylight into the middle of the plan.
Because these terraces sit on tight plots close to their neighbours, we plan the build to keep disruption down, protecting the party wall and managing access along a narrow TW11 street. Double-storey rear extensions add a bedroom or bathroom above the new ground floor, which means heavier foundations and steel again sized by a structural engineer. We handle the groundworks, roofing, glazing and full internal fit-out so you deal with one team throughout.
Some Teddington extensions fall under permitted development, while others need a full planning application to Richmond Council, and which route applies depends on the property. Size, height, how much you have already extended and whether the home sits within a conservation area or is listed all change the answer. We assess your terrace honestly, tell you which path fits and prepare the drawings, rather than assuming every scheme can be built under permitted development rights.
Whichever planning route applies, the structural work itself is governed by building regulations, so the foundations, steel beams, drainage, insulation and fire safety are all inspected and signed off by building control. Where the extension touches a shared boundary or party wall, we help you serve the correct notices too. Keeping planning and building regs clearly separate means no surprises, a lawful build and a finished extension that adds lasting value to a Teddington home.
Teddington homeowners choose GS Renovation because we handle the extension end to end, from foundations and steel to roofing, glazing and fit-out, with one team accountable throughout. With 30+ years in TW11, we advise honestly on permitted development versus a Richmond Council application, manage party wall matters and build to full building regulations so the finished space is sound and lawful.
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 Teddington, 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.
How long house extensions takes in Teddington depends on the size of the job, but we always agree a programme before starting and stick to it, keeping you informed from the first day to the last.
Teddington 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 Teddington 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 Teddington'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 might, or it might qualify as permitted development, and it depends on your terrace. Size, height, previous extensions and whether you are in a conservation area all matter in TW11. We assess your property, tell you which route applies and prepare the drawings for Richmond Council if needed. Either way the structure is signed off separately under building regulations by building control.
We cover the whole of Teddington and the TW11 area and the surrounding South West 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 Teddington. 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 Teddington and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Teddington.
Get Your Free Quote