Single and double storey extensions in Catford. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Catford, working with the bay-fronted Victorian and Edwardian terraces that shape SE6. Over more than 30 years in South East London we have added rear, side-return and wrap-around extensions, handling the foundations, steel, roof and full fit-out as a single project managed by one accountable team.

The classic Catford project fills in the side return, that narrow strip of yard beside the rear closet wing, to widen a cramped galley kitchen into a bright kitchen-diner. We dig and pour foundations sized to the ground conditions, install a steel goalpost frame where the old external wall comes out, and tie the new roof, often with rooflights, back into the existing terrace. A rear extension can be added at the same time to push into the garden.
Because these SE6 homes sit in terraces, we plan for the party walls on both sides and the drainage that runs along the rear. We build up from a damp-proofed floor, match or complement the London stock brick where it shows, and fit out the inside completely, so you move from a dated back addition to a proper open family space in one continuous programme.
Not every Catford extension needs a planning application. A modest single-storey rear extension often falls under permitted development, provided it stays within the size, height and boundary limits and the house has not already used up those rights. We assess your specific property first, because many terraces have been extended before and end conditions vary street to street across SE6.
Larger, double-storey or wrap-around schemes usually need a full planning application to Lewisham Council, and anything altering the front or sitting in a conservation area needs careful handling. Whichever route applies, the structural work still needs building regulations approval and building control inspections. We guide you through both, prepare the drawings and manage the submissions so you know exactly what consent your project requires.
GS Renovation gives Catford homeowners one team for the whole extension, from foundations and steel to roof, brickwork and finish. We know how SE6 terraces are built, we advise honestly on permitted development versus a Lewisham planning application, and we handle party wall matters and building control throughout. Thirty years of local experience means fewer surprises and a build that respects the character of your period home.
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 Catford, 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.
Most house extensions projects in Catford 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.
GS Renovation's team brings over 30 years of hands-on experience to house extensions and wider building work across Catford 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 Catford 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 Catford'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 the property. Many single-storey side-return and rear extensions in Catford qualify as permitted development if they stay within the allowed dimensions and the house still has those rights. Larger or double-storey schemes, or anything in a conservation area, usually need a full application to Lewisham Council. We check your specific SE6 home and handle whichever route applies, plus the building regulations approval.
We do. GS Renovation covers all of Catford and the SE6 area and the wider South East London. Call 07472 424 226 and we will confirm we work on your road.
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 Catford. 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 Catford and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Catford.
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