Single and double storey extensions in Parsons Green. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Parsons Green, working with the bay-fronted Victorian and Edwardian terraces near the green that have rear closet wings and side returns waiting to be used. With over 30 years in SW6 and across Hammersmith and Fulham, we take your extension from foundations to full fit-out as one project.

The most popular extension on a Parsons Green terrace fills in the side return, that narrow strip alongside the rear closet wing, and often adds a single-storey rear extension to create a wide kitchen-diner opening onto the garden. We handle the groundworks and foundations, allowing for the shallow Victorian footings and any nearby trees on these SW6 plots, then form the new opening with a steel beam sized by the engineer.
Double-storey and wrap-around extensions are also common where owners want an extra bedroom or en-suite above. We manage the roof works, whether a flat roof with rooflights or a pitched tie-in to the existing slope, and match the London stock brick and detailing so the addition sits comfortably against the original terrace and its neighbours.
Whether your extension is permitted development or needs a full planning application depends on the property. Many single-storey rear extensions on Parsons Green terraces fall under permitted development, but properties in a conservation area, or those already extended, often need permission from Hammersmith and Fulham Council. We assess your specific SW6 home and advise on the right route before any work begins.
Extensions always need building regulations approval for the structure, foundations, insulation and drainage, which is separate from planning. Because you are building right up to the boundary and often against a shared wall, party wall notices to the neighbours either side are usually required. We coordinate the council submission, building control inspections and party wall matters so the whole process runs in order.
Homeowners in Parsons Green choose GS Renovation because one team runs the whole extension, from foundations, steel and roof to the party wall notices and final decoration. We know how the terraces near the green behave, advise honestly on permitted development versus planning, and deliver a build that adds real space and value in SW6, backed by 30+ years locally.
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 Parsons Green 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.
Most house extensions projects in Parsons Green take between two and eight weeks depending on the scope and whether structural work is involved. We provide a clear programme before work begins so you know exactly what to expect.
Parsons Green 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 Parsons Green 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 Parsons Green'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 your property. Many single-storey side-return and rear extensions in Parsons Green qualify as permitted development, but if you are in a conservation area, have a flat above, or the home is already extended, you may need permission from Hammersmith and Fulham Council. We assess your SW6 property first and confirm the correct route before starting.
Yes. We work throughout Parsons Green and the SW6 area, as well as the surrounding parts of 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 Parsons Green. 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 Parsons Green and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Parsons Green.
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