Structural alterations, new openings and steel support in Kew. Trusted, professional, 30+ years' hands-on experience.
GS Renovation carries out structural alterations throughout Kew, where bay-fronted Victorian and Edwardian terraces with rear closet wings and side returns often need new openings, replacement joists or supported openings. With over 30 years across TW9, we design, prop, install and certify each change to the Building Regulations under Richmond Council.

The rear closet wings and side returns on Kew's terraces are where most structural alterations happen: a new opening between the kitchen and the return, a wider doorway into the dining room, or replacement joists where a floor has sagged over a century of use. Each case starts with a structural engineer specifying the beam or lintel, its bearings and the padstones needed to carry the load.
Where original timbers are decayed or undersized, we splice or replace joists and build in proper support before opening anything up. If ground movement has affected a corner or bay, the engineer may specify underpinning, which we carry out in sequenced bays so the wall above stays fully supported throughout the works.
Every supported opening we form is temporarily propped, cut in stages and given a steel beam bearing onto padstones sized for the masonry above, never a shortcut. Richmond Council building control inspects the work under the Building Regulations and issues the certificate, which matters when you later come to sell a home near Kew Gardens and a surveyor asks for the paperwork.
Because these walls are usually shared with the neighbouring terrace, alterations that affect the party wall are notifiable under the Party Wall Act, and you serve the notices before starting. From the engineer's drawings through to the completion certificate, one team coordinates the lot, so your alteration is properly designed, safely built and fully documented.
For structural alterations in Kew, GS Renovation gives you a single accountable team handling the engineer's design, safe propping and Richmond Council building control sign-off. Whether it is a new opening in a closet wing, replacement joists or underpinning, we work cleanly in your occupied TW9 home and certify every change, backed by more than 30 years of experience.
George was very friendly and helpful from start to finish. He worked really hard to ensure our kitchen was installed to a high standard and was…
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!!!!…
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
FAQ
There is no going rate worth quoting, because scope varies more than the market does. A simple structural alterations job near TW9 and a complicated one elsewhere in Kew are different pieces of work. GS Renovation surveys and prices each on its merits, with the Richmond Council element shown separately. Ring 07472 424 226 for an honest steer on your Victorian and Edwardian terraced property, or email info@gsrenovationltd.co.uk with the TW9 address and we will book a free survey. 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.
Rarely, in our experience. The Richmond Council element of structural alterations on a Kew home is predictable once you know which route applies, and GS Renovation advises whether a building notice or full plans approval suits your TW9 property. Full plans takes longer but removes uncertainty before work starts. Either way the inspections are booked ahead across Richmond upon Thames. Ring 07472 424 226 and we will explain which of the two applies to a TW9 property in Kew.
It helps, provided the firm is genuinely local rather than badged that way. Knowing how Edwardian bay-fronted houses with generous ceiling heights and long rear gardens are built means structural alterations at a TW9 address is priced from experience instead of caution, and a team already working in Richmond upon Thames can reach your Kew property quickly. GS Renovation is on sites nearby most weeks. Check insurance and reviews whoever you choose. Ring 07472 424 226 and ask where we are currently working. Insurance and Richmond upon Thames references are available beforehand.
The structural engineer. GS Renovation is a contractor: we appoint and coordinate the engineer, arrange the temporary works, and build to their design at your Kew address. We do not produce calculations ourselves, and any builder claiming to is worth questioning.
Sometimes, depending on where the property sits. Structural alterations in Edwardian bay-fronted houses with generous ceiling heights and long rear gardens within a conservation area is usually possible but more constrained in form, and Richmond Council will scrutinise anything visible from the street at TW9. GS Renovation handles the application and the negotiation. Internal work in a Kew house is generally more straightforward. Ring 07472 424 226 and we will explain what Richmond Council is likely to ask about structural alterations at a TW9 address of that age.
Yes. Sagging floors in Kew's older terraces often mean undersized, decayed or over-spanned joists. A structural engineer inspects and specifies replacement or additional joists and their support, we prop as needed and install them, and Richmond Council building control signs the work off under the Building Regulations. If a party wall is involved, you serve the required notices first.
Just ask, and expect a straight answer. GS Renovation works across Kew, Twickenham and much of South West London, so most enquiries about structural alterations at a TW9 address are within range. Where they are not, we will say so and often suggest someone else. Email info@gsrenovationltd.co.uk with the postcode and the job description. Nothing is owed for the reply or the survey. Turning work down honestly is better for a Richmond upon Thames homeowner than guessing.
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 Kew. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Kew and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Kew. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.