Structural alterations, new openings and steel support in Richmond upon Thames. Trusted, professional, 30+ years' hands-on experience.
GS Renovation carries out structural alterations across Richmond upon Thames, from new openings in Kew's period homes to replacement joists and supported openings in the riverside townhouses of TW1 and TW9. With 30-plus years working on Georgian, Regency and Victorian buildings, we design, prop, install and certify each change to the letter of the Building Regulations.

Richmond's Georgian and listed houses were built for a different way of living, and altering them takes care. Whether you want a wide opening between two reception rooms, replacement joists where old timbers have sagged, or a supported opening for new bifold doors at the rear, every change starts with a structural engineer establishing the loads and specifying the steel or timber to carry them.
Older properties near the Thames in TW10 can also need underpinning where foundations were laid shallow or ground has moved over the decades. We excavate and pour in sequenced bays so the house is never undermined, and we tie any new structure into the existing fabric properly. On listed frontages we keep interventions reversible and sympathetic to the original build wherever the design allows.
Every load-bearing alteration is notifiable to building control under the Building Regulations. We prepare the engineer's calculations, agree the details with Richmond Council's building control, and book inspections at the key stages so the work is witnessed and signed off. New openings get correctly sized lintels or beams on padstones; supported openings are propped and staged so nothing above is ever left unsupported.
Where an alteration touches a shared party wall, common in the borough's terraces and semis across TW2 and SW13, the Party Wall Act applies and you serve notice on the neighbour first. If your home is listed or in a conservation area we check whether any external element needs consent. You get one accountable team managing engineer, consents, build and certificate together.
Homeowners across Richmond trust GS Renovation for structural alterations because we cover the whole chain: engineer's design, party wall or listed-building checks, safe propping and staged build, and building control sign-off. Three decades on the borough's Georgian and Victorian homes mean we understand how these buildings behave and how to alter them without surprises.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
FAQ
Sometimes, though rarely by as much as people fear. The structural part of structural alterations are broadly similar; what differs in a listed and conservation-area Richmond upon Thames house is reinstating cornice, floors and plaster around the TW1 works. Those appear as separate lines on the quotation. GS Renovation has worked on this stock for years and prices it from experience rather than caution. Ring 07472 424 226 and we will describe recent work on similar TW1 properties in Richmond upon Thames. 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.
Ring 07472 424 226 and we will tell you honestly rather than promise a date we cannot hold. Typically structural alterations are booked a few weeks ahead for Richmond upon Thames homes, and the free survey at TW1 is what gets you into the schedule. Where Richmond Council approval is required we submit while you decide. GS Renovation does not take deposits to reserve Richmond upon Thames slots. The Richmond upon Thames start date is confirmed in writing once the Richmond upon Thames scope is agreed.
We are a contractor, not a middleman. The structural alterations work at your TW1 property is carried out by our own team rather than brokered to whoever is cheapest that week, which is why one person can be accountable for the whole Richmond upon Thames job. GS Renovation is fully insured, company number 14611254. The engineer, where the design needs one, is appointed by us. Ring 07472 424 226 for Richmond upon Thames references. The certificate is available at the TW1 survey in Richmond upon Thames.
Only work changing the outside. Internal beams, new openings and floor structures in a Richmond upon Thames house engage building regulations rather than planning. A new external opening, or anything on a listed or conservation-area property, needs an application to Richmond Council.
Expect the survey to take longer, and be glad of it. Understanding how a listed and conservation-area Richmond upon Thames house is actually built is what makes a structural alterations quotation hold at TW1, and assumptions are what turn a fixed price into a variable one. GS Renovation would rather spend the extra hour first. The Richmond upon Thames visit is free and carries no obligation. The TW1 survey comes before any structural alterations decision, and it costs a Richmond upon Thames homeowner nothing.
Yes. Riverside and older Richmond homes in TW10 sometimes need underpinning where foundations are shallow or ground conditions have shifted. We work to a structural engineer's design, excavate and pour in short sequenced bays so the house stays supported throughout, and have building control inspect and certify the work. On listed properties we agree the approach with any required consent first.
All of it. We carry out structural alterations throughout Richmond upon Thames and into Hounslow, with no travel surcharge for a TW1 property. If your address sits right on the boundary of Richmond upon Thames, GS Renovation will still look at it and say plainly whether it is workable. Email info@gsrenovationltd.co.uk with the postcode for a definite answer. Quotes are free and carry no obligation in South West London generally. Aftercare visits reach a TW1 address just as easily.
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 Richmond upon Thames. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Richmond upon Thames and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Richmond upon Thames. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.