Single and double storey extensions in Peckham. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Peckham, working with the bay-fronted Victorian and Edwardian terraces that fill SE15. With over 30 years in Southwark, we handle single and double storey rear extensions, side-return infills and wrap-arounds, from the foundations and steelwork through to the full fit-out, all under one accountable team.

The typical Peckham terrace has a narrow side return running alongside the rear closet wing, and infilling it is one of the most effective ways to widen a cramped kitchen. We dig and pour new foundations against the existing wall, tie in the drainage and set a steel beam where the old outside wall comes out. The result is a wide, bright kitchen-diner that suits how families in SE15 actually live.
Combining a side-return infill with a modest rear extension gives even more space without swallowing the whole garden. We match brickwork to the Victorian stock where it shows, form a flat or pitched roof with rooflights over the darker middle of the plan, and carry the project through to plastering, electrics and decoration. You deal with one team from groundworks to the finished room.
Whether your Peckham extension is permitted development or needs a full planning application depends on the property. Many single storey rear extensions on a standard SE15 terrace fall under permitted development, but corner plots, flats, articles of local restriction or anything near a conservation area can require an application to Southwark Council. We assess your specific house and tell you honestly which route applies before you commit.
Either way, the structural work needs building regulations approval, and shared walls bring in the Party Wall Act. Because Peckham terraces sit tight against their neighbours, digging foundations near the boundary or building off a party wall almost always means serving notice. The engineer sizes the steelwork, arrange building control inspections and help you handle the party wall notices so the whole job stays properly compliant.
Peckham homeowners pick GS Renovation because we build extensions that respect the terrace they attach to, from foundations and steel to the final coat of paint. We advise clearly on permitted development versus a Southwark Council application, manage building control and keep one team accountable throughout. Thirty plus years in SE15 sits behind every project.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
Really happy with the quality of remedial works carried out by George in putting other previous tradesman work right. He was very helpful, honest and…
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
FAQ
A rough steer yes, a quotation no. Ring 07472 424 226 or email info@gsrenovationltd.co.uk and we will describe how house extensions normally runs in Peckham, including the Southwark Council approvals involved. The figure itself waits until the SE15 property has been seen, because bay-fronted Victorian terraced construction rarely matches the assumption. That is what keeps a GS Renovation quotation accurate. Nothing at all is owed for the SE15 survey, and the written Peckham figure follows within days. 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.
You get one in writing at quotation stage, not afterwards. The house extensions timescale for an SE15 home is broken into stages with the Southwark Council inspections marked, so you can see where a Peckham project can and cannot be accelerated. If the property throws something up, GS Renovation re-plans openly rather than letting the dates drift. Weekly updates follow throughout the Southwark job. Ask GS Renovation on 07472 424 226 how a comparable SE15 project actually ran.
Our founder has over 30 years of hands-on experience, and house extensions are core work rather than an occasional job. We are on sites across Peckham and Southwark most weeks, so the Edwardian bay-fronted houses with generous ceiling heights and long rear gardens around SE15 are familiar ground. GS Renovation is rated 4.9 from 31 MyBuilder reviews. Ask for addresses of finished work and go and look at it. Ring 07472 424 226 and we will arrange that. Ask on 07472 424 226 about comparable Southwark projects.
Many single-storey rear extensions in Peckham fall under permitted development, but side returns, double-storey extensions and work in conservation areas usually need full permission. We assess your SE15 property and manage both the Southwark Council application and building control.
Usually, and where it is not we say so before you spend money. Some Edwardian bay-fronted houses with generous ceiling heights and long rear gardens simply will not accommodate what an owner has in mind, and finding that out at the free SE15 survey is far better than later. GS Renovation explains the alternatives for your Peckham home. Nothing is owed if you decide against it. GS Renovation will explain on 07472 424 226 whether house extensions really suits your SE15 home in Peckham at all.
It depends on your specific property. Many single storey rear extensions on a standard SE15 terrace are permitted development, but flats, corner plots and homes affected by local restrictions or a nearby conservation area often need a full application to Southwark Council. We assess your house first and tell you which route applies. Whichever it is, the build still needs building regulations approval.
If it is in Peckham, yes. House extensions runs across the whole area and into Dulwich, and there is no travel charge for an SE15 property. GS Renovation would rather tell you straight away that a street is outside the patch than quote and hope. Give us the postcode on 07472 424 226 and you will know today. Building control still goes through Southwark Council wherever you are. The survey afterwards costs a Peckham homeowner nothing.
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 Peckham. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Peckham and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Peckham. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.