Structural alterations, new openings and steel support in Hounslow. Trusted, professional, 30+ years' hands-on experience.
GS Renovation carries out structural alterations throughout Hounslow, working on the Victorian and Edwardian terraced stock that fills Chiswick, Brentford and Isleworth. Across 30-plus years in TW3, TW4, TW5, TW7, TW8 and W4 we have formed new openings, replaced tired joists, underpinned settled walls and installed supported openings, always to an engineer's design and signed off under the Building Regulations.

The bay-fronted terraces and Edwardian villas around Osterley Park and Syon Park often need more than a single knock-through. We form new openings between a kitchen and the rear closet wing, replace joists softened by decades of damp, and install supported openings where a doorway is widened into a genuine structural span. Each of these is designed by a structural engineer, not guessed at on site.
Older homes near the river at Brentford sometimes show signs of movement, and here underpinning may be the honest answer. Where foundations have settled we work to the engineer's scheme, excavating and pouring in sequenced bays so the wall is never undermined. Every steel we introduce bears onto padstones sized for the load, propped temporarily and released only once the new support is fully bedded.
Internal structural alterations are controlled under the Building Regulations rather than planning, so Hounslow Council's building control is the body that inspects and certifies the work. Planning permission only enters the picture for exterior changes in a conservation area or to a listed building, which matters near Chiswick House, so we tell you plainly which route your project actually needs before you spend on the wrong application.
Where an alteration touches the party wall shared with a neighbouring TW7 or W4 home, the Party Wall Act applies and you serve the required notice in advance. We coordinate the engineer's calculations and the building control inspections as one package, book each stage at the right moment and hand over the completion certificate at the end.
Where an alteration touches the wall you share with a neighbour, notice has to be served before work starts. That duty sits with you as the building owner, not with your contractor, and we time the programme around the award rather than around the notice.
For structural alterations in Hounslow, homeowners value having a single team that owns the engineer's design, and building control sign-off with Hounslow Council. Whether it is a new opening, replacement joists, underpinning or a supported span, we prop safely, work cleanly in your home and certify the result, drawing on 30+ years across the borough.
Built a new extension at rear of property. Laid foundations, drainage, raised floor, new roof and completed all fixtures and interior decoration…
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
FAQ
The scope is written out rather than implied. For a Hounslow property the structural alterations quotation lists the structural work, the trades that follow it, the Hounslow Council inspections and the making good that bay-fronted Victorian terraced construction usually needs. Site protection and the daily clear-up at TW3 are included as standard. GS Renovation does not treat basic care of your house as an extra. Ring 07472 424 226 and we will confirm what applies at your TW3 address. As a rough guide, structural alterations in London ranges from roughly £1,500 for a simple opening to £15,000 or more where underpinning or major works are involved (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.
It depends on scope, and we will not pretend otherwise on the phone. Once the TW3 survey is done GS Renovation can give a Hounslow homeowner real dates for structural alterations, including the Hounslow Council inspection points. Material lead times are ordered against that programme early. Ring 07472 424 226 and we will describe what a bay-fronted Victorian terraced property usually needs. Nothing about the Hounslow dates is guessed once the free survey at TW3 is done.
Paperwork is where structural alterations projects quietly lose time, so we take it on. GS Renovation runs the Hounslow Council application and inspections for your TW3 property alongside the works programme, which keeps the Hounslow job moving. The engineer's design, where the structure requires one, is coordinated by us as well. You receive the certificate at completion. Ring 07472 424 226 to hear how a Hounslow application runs. The certificate matters when a Hounslow property changes hands.
Yes, and often they should be. Sequencing matters more than speed with structural work: propping, then removal, then permanent support, with Hounslow Council inspecting at each defined point. We set that order out for your Hounslow project before starting.
A different method, not a different quality. What changes on structural alterations in bay-fronted Victorian and Edwardian terraces with rear closet wings and side returns is the amount of investigation beforehand and the care in reinstatement afterwards at the TW3 address. GS Renovation programmes both into the Hounslow job. The structural stage in between runs much as it would anywhere in Hounslow. Email info@gsrenovationltd.co.uk and we will explain what structural alterations at a TW3 property in Hounslow involves before you commit yourself to anything.
Internal structural alterations, including underpinning and new openings, are handled under the Building Regulations, not planning, so Hounslow Council's building control inspects and certifies them. Planning only applies to exterior work in a conservation area or on a listed building, as around Chiswick House. We confirm which consent your specific job needs before any work starts.
Regularly, because a great deal of our structural alterations work is here. Being close enough to a TW3 property to attend quickly is what makes the programme and the aftercare work in practice. GS Renovation charges nothing for the Hounslow survey and nothing for reaching you. Call 07472 424 226 for the next available slot in Hounslow. Building control is coordinated with Hounslow Council as standard. Quotes are free and carry no obligation across Hounslow.
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 Hounslow. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Hounslow and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Hounslow. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.