Single and double storey extensions in Newham. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds house extensions throughout Newham, mostly on the bay-fronted Victorian and Edwardian terraces of East Ham, Forest Gate and Stratford. Drawing on 30+ years of building in E6, E7, E12, E13, E15 and E16, we handle foundations, steelwork, roofing and the full fit-out as one accountable project.

The classic Newham extension fills in the side return, the narrow alley beside the rear closet wing that these terraces were built with. Roofing over that strip and pushing the back wall out turns a cramped galley kitchen into a wide open-plan kitchen-diner. We dig and pour the foundations, build the walls, and install the steel beams that carry the original rear wall once it comes out, all inspected under building regulations.
A wrap-around extension combines the side return with a rear projection for a much larger ground floor, while a double-storey extension adds a bedroom or bathroom above. On Newham's tighter plots we plan carefully around the boundary and existing drainage, and because the flank and rear walls are usually shared, we sort out any Party Wall Act notices to neighbours in E12 or E13 before we break ground.
Many single-storey rear extensions on Newham terraces fall under permitted development, which means no full planning application, though you may still need a lawful development certificate and prior approval for a larger rear extension. It depends on the size, the height, how much has already been added and whether your street sits within a conservation area, so we always check the position with Newham Council before drawing up the work.
Where a project goes beyond permitted development, for example a double-storey or a wrap-around, or where the property is in a conservation area, a full planning application to Newham Council is required. Either route, the structure itself is controlled by building regulations, with building control inspecting foundations, steel and insulation. We guide you through both consents so an E6 or E7 extension is signed off correctly from footings to finish.
Newham homeowners choose GS Renovation because one team takes the extension from foundations to final decoration, including the engineer's steelwork, the the building control inspections. With 30+ years on the borough's terraces we know the side-return layout, the tight plots and Newham Council's requirements, so you deal with a single contractor throughout.
Very friendly and I am very pleased with the work he has done, also very clean worker and enthusiastic about his work. Can not fault this company!!!!…
George did a great job on our new bathroom. He is a really friendly and helpful guy and always ready to discuss any issues or concerns and come up…
Built a new extension at rear of property. Laid foundations, drainage, raised floor, new roof and completed all fixtures and interior decoration…
FAQ
The totals are usually closer than the structures behind them. A national firm subcontracts the house extensions work in Newham and prices its own overhead into your quotation, whereas GS Renovation carries out the E6 job with its own team. That also means one named project manager rather than a call centre. Ask both quotations for the same itemised breakdown. Ring 07472 424 226 and GS Renovation will explain who would actually be on your E6 site in Newham. 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.
They vary enough that the engineer specifies foundations from what is found rather than from a standard detail. Across Newham the ground beneath a property can differ from one street to another, so trial holes and the inspection of the open trench are what establish the bearing. Foundations for an extension are taken to a depth suited to that ground and to any nearby trees, and the inspector sees the trench before concrete is poured.
Frequently yes, with the party wall position established first. Building to the boundary at your Newham property usually means excavating close to or against a neighbour's structure, which brings the Party Wall etc. Act into play. The wall may be built up to the line or as a party wall depending on ownership. The deeds and the notice come before the foundation is set out.
It adds roof area and often relocates gullies, so it usually does. A Newham extension needs its rainwater taken to a surface water drain or a soakaway sized for the volume, and any existing gully within the footprint has to be dealt with rather than covered. Where a shared drain crosses the site, the water authority's agreement is required before building over or near it.
The construction is a matter of months and the preparation frequently takes longer. A Newham extension needs a design, any planning decision, building control approval, a party wall award where one applies and materials ordered ahead of need. Those run in parallel where they are started early. The programme is agreed before work begins so the house is not opened up while a consent is still outstanding.
It is reinstated to what was agreed, and that is written down before work starts. Building at the rear of your Newham property means traffic across the garden, spoil from the foundations and a working area beside the new structure. Whether the finish is turf, paving or simply levelled soil ready for the owner is stated in the scope, because assumptions differ widely here.
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 Newham. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Newham and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Newham. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.