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House Extensions Hounslow

Single and double storey extensions in Hounslow. Trusted, professional, 30+ years' hands-on experience.

GS Renovation builds house extensions throughout Hounslow, working with the bay-fronted Victorian and Edwardian terraces and riverside homes that define the borough. Drawing on more than 30 years across TW3, TW4, TW5, TW7, TW8 and W4, we handle everything from foundations to final fit-out, whether you are extending in Isleworth, Brentford or towards Chiswick.

House Extensions in Hounslow, London by GS Renovation
House Extensions by GS Renovation in Hounslow.

Side-return and rear extensions in Hounslow

The classic Hounslow extension fills in the side return beside the rear closet wing, widening a narrow Victorian kitchen into a bright open-plan space that runs the full width of the house. We dig and pour the foundations, allowing for any nearby trees and the London clay common across the borough, then build up in matching brick and tie the new roof into the existing structure.

Wrap-around extensions combine the side return with a rear projection to create a generous kitchen-diner, usually needing a steel beam where the original rear wall comes out. We manage the groundworks, the steel, the roof and the glazing as one job, and because the wall to your neighbour is a shared party wall, we help you serve the necessary party wall notices before we break ground in TW7 or TW8.

Planning and permitted development in Hounslow

Whether your extension is permitted development or needs a full planning application depends on the property and its size. Many single-storey rear extensions on Hounslow's terraces fall under permitted development rights, but homes in a conservation area near Chiswick House, Osterley Park or Syon Park, or any property that has already been extended, often need permission from Hounslow Council. We advise honestly on which route applies before you commit.

Either way, the structural build is governed by building regulations, so building control inspects the foundations, the steelwork, the insulation and the drainage as the work proceeds. We prepare the drawings, submit to Hounslow Council or a permitted development lawful use certificate where sensible, and coordinate the party wall side too, so your Brentford or Isleworth extension is fully compliant from footings to finish.

  • Planning permission and permitted development
  • Foundations, groundworks and steel frames
  • Full fit-out, finishing and making good
  • Architectural drawings and structural coordination
  • Single and double storey extensions
Service areaHounslow · TW3, TW4, TW5 and TW7
Local authorityHounslow Council
Part ofWest London (Outer London)
Typical homesBay-fronted Victorian and Edwardian terraces with rear closet wings and side returns
Also covered nearbyHillingdon, Ealing, Hammersmith and Fulham and Richmond upon Thames

Why Hounslow Homeowners Choose GS Renovation

Hounslow homeowners choose GS Renovation because one team carries the extension from foundations to fit-out, including the steel, the roof and the fine finishes. We know the borough's terraced stock, the clay ground conditions and the local planning picture, and we keep sites tidy and neighbours informed. Thirty years of extensions across West London back the work.

  • Free, no-obligation quotations
  • Over 30 years of hands-on experience
  • Dedicated project management
  • Fully insured and guaranteed work
  • Building control and planning support
  • Clean, tidy and reliable tradespeople
30+ YearsExperience
Fully Insured& Guaranteed
500+ ProjectsCompleted
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
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.
OscarCrofton Park, London · via MyBuilder
★★★★★
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.
KathWood Green, London · via MyBuilder
★★★★★
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!
Adil KhanWoolwich, London · via MyBuilder
Read all 31 reviews on MyBuilder

FAQ

Frequently Asked Questions about House Extensions Hounslow

How much does house extensions cost in Hounslow?

The cost of house extensions in Hounslow depends on the size of the property, the specification and the scope of work. GS Renovation provides free, detailed and itemised quotations for every Hounslow project. Call 07472 424 226 or email info@gsrenovationltd.co.uk for a no-obligation 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.

How long does house extensions take in Hounslow?

We will give you an honest timescale for house extensions in Hounslow after surveying your home. Most projects run on a clear weekly programme, and we tell you up front about any lead times on materials or approvals.

Why choose GS Renovation for house extensions in Hounslow?

GS Renovation's team brings over 30 years of hands-on experience to house extensions and wider building work across Hounslow and the surrounding area. We offer free quotes, a dedicated project manager, full insurance, building control compliance where required, and comprehensive aftercare.

Do I need planning permission for an extension in Hounslow?

Many single-storey rear extensions in Hounslow 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.

Do you work on Victorian and Edwardian terraced homes in Hounslow?

Yes. A large share of Hounslow'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.

Will my Hounslow rear extension need planning permission or is it permitted development?

It depends on the size and the property. Many single-storey rear extensions on Hounslow terraces are permitted development, but if you are in a conservation area near Chiswick House or the home has been extended before, you will likely need permission from Hounslow Council. We assess your specific property first. Regardless of the planning route, the build itself needs building regulations approval.

Do you cover all of Hounslow?

We do. GS Renovation covers all of Hounslow and the TW3 area and the wider West London. Call 07472 424 226 and we will confirm we work on your road.

Every Service, One Team

More GS Renovation Services in Hounslow

The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Hounslow. Explore what else we do locally:

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Ready to Start Your Hounslow Project?

Contact GS Renovation today for a free, no-obligation quote for house extensions in Hounslow.

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Call 07472 424 226