Single and double storey extensions in Acton. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Acton and the wider W3 postcode, working with the bay-fronted Victorian and Edwardian terraces that line the streets near Ealing Common. With 30+ years in Ealing borough, we handle everything from foundations and steel to the final fit-out, on single storey, double storey, side-return and wrap-around projects.

The classic Acton project fills in the side return, the narrow alley beside the rear closet wing, to widen a cramped galley kitchen into a bright open-plan space. We dig and lay the foundations, build up in matching brick, install the steel beams that carry the original rear wall, and tie the new roof into the existing terrace so it looks like it always belonged there.
Wrap-around extensions combine the side return with a rear projection to make the most of the plot, while double-storey schemes add a bedroom above. On these solid-walled W3 terraces we pay close attention to damp-proofing, ground levels and how the new structure meets the period brickwork, so the addition performs as well as it looks.
Whether your Acton extension is permitted development or needs a full planning application depends on the property. Many single-storey rear and side-return extensions fall under permitted development, but corner plots, larger footprints, and any home in a conservation area or with an Article 4 direction may need permission from Ealing Council. We assess your specific house before any drawings are finalised.
Extending up to or across a boundary on a terraced W3 street almost always engages the Party Wall Act, since your neighbours share the flank wall. We guide you through the notices alongside the building regulations approval that the foundations, steel and drainage all require. The structural sign-off and the planning route are two separate things, and we keep both on track.
Acton homeowners choose GS Renovation because one team carries the extension from foundations to final coat. We advise honestly on whether your project is permitted development or needs planning, manage the party wall notices your terrace will require, and build to building regulations throughout. Three decades across Ealing borough mean no surprises on a W3 plot.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
Saaid is the best craftsman I have worked with. He knows what he is doing from the very beginning. He has a great knowledge of construction…
My husband and I are extremely pleased with the work. The standard of the work is outstanding and Saiid has a great eye for detail and will not leave…
FAQ
You get a variation, in writing, before anything else happens. The commonest cause on a house extensions job is a homeowner upgrading a finish once the W3 space is open, which is entirely reasonable and easy to price. GS Renovation also re-checks the programme so an Acton project does not quietly slip. The Ealing Council inspections are rebooked where needed. Ring 07472 424 226 to hear how that runs on a W3 project in Ealing. 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.
The whole sequence is set out for you at the start. Survey, quotation, engineer where house extensions need one, Ealing Council approval, then construction at the W3 property, each with an indicative duration. GS Renovation updates an Acton client weekly once work begins. That way nobody in the Ealing household is guessing when the house comes back. Ring 07472 424 226 and GS Renovation will set out the whole sequence for a W3 home in Acton.
A five year guarantee applies to installations, and it is backed by a real company. We are GS Renovation Ltd, number 14611254, fully insured, which an Acton homeowner can verify before house extensions begins at W3. The Ealing Council certificate covers the regulated element. GS Renovation would rather you checked all of it than took our word. Email info@gsrenovationltd.co.uk and we will send the Ealing paperwork. Verification takes an Acton homeowner about a minute.
Always, regardless of the planning route. Foundations, structure, insulation, drainage and ventilation are all inspected. GS Renovation submits the application to Ealing Council and books the inspections through to the completion certificate on your Acton project.
Most weeks, that is the whole of it. GS Renovation carries out house extensions on this stock across Acton and the wider Ealing, so the W3 property in front of us is rarely a new problem. Our founder brings over 30 years of hands-on experience to that judgement. Ealing Council building control is coordinated as standard. Ring 07472 424 226 and we will describe how house extensions were recently handled on a very similar W3 property.
Often not. Many single-storey side-return and rear extensions in Acton qualify as permitted development, so no planning application is needed, though building regulations approval still applies to the foundations, steel and drainage. But conservation areas, Article 4 directions and larger schemes can require permission from Ealing Council. We check your specific W3 property before committing to a design, so you know the route from the start.
Yes, Southall is well within the patch. House extensions runs across Acton, the surrounding Ealing and the areas between them, so neither address is a stretch. GS Renovation charges nothing for the survey at a W3 property or anywhere else nearby. Ring 07472 424 226 and we will confirm availability for both. Building control is coordinated with Ealing Council on each of them. Small jobs at either address are quoted on exactly the same basis.
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 Acton. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Acton and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Acton. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.