Structural alterations, new openings and steel support in Hammersmith. Trusted, professional, 30+ years' hands-on experience.
From new door openings to replacement joists and underpinning, GS Renovation carries out structural alterations throughout Hammersmith's W6 streets. Our 30-plus years working on bay-fronted Victorian and Edwardian terraces near the Thames means we understand how these homes are built, and how to change them without weakening the fabric that has stood for a century.

Older W6 terraces throw up a range of structural jobs. You might want a wide supported opening into the rear closet wing, a new opening formed in a solid brick wall, or original timber joists replaced where past leaks near the roof valleys have caused rot. Each starts with an engineer specifying the beam, lintel or joist size and the bearings, so the alteration is designed for your specific house rather than assumed.
Underpinning comes up too, usually where seasonal ground movement or historic settlement has left cracking in a Hammersmith terrace. We work in short controlled bays beneath the existing footings, pouring mass concrete to a designed depth so the wall is supported without undermining it. Whatever the alteration, the principle is the same: understand the load path first, then build the new support before removing the old.
New openings and beams that pick up on the party wall bring the Party Wall Act into play, exactly as with any shared wall in these terraces. You serve the required notice on the neighbour, and where underpinning affects the boundary we deal with that too. Getting the party wall position right early avoids disputes and keeps a Hammersmith project moving on schedule.
Structural alterations are controlled under the Building Regulations, so Hammersmith and Fulham Council's building control inspects the works rather than the planning department. Internal changes do not need planning permission; only exterior work in a conservation area or on a listed building does. We keep the two separate, arrange the right inspections at the right stages and hand over the completion certificate at the end.
For structural alterations in Hammersmith you want one team that owns the whole process, and that is what GS Renovation provides. We coordinate the engineer, serve carry out underpinning or new openings safely, and manage building control to sign-off. Three decades of work across W6 and neighbouring Fulham stand behind every job, done tidily in your home.
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.
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
FAQ
No, because everything foreseeable is on the quotation already. Structural alterations in Victorian and Edwardian terraced housing around W6 occasionally reveals something behind plaster, and when it does we stop, cost it, and get your agreement before continuing at the Hammersmith property. GS Renovation carries the same approach across Hammersmith and Fulham. Quotes are free and carry no obligation, whether the W6 property sits in Hammersmith or the wider West London, and the written figure follows within days. 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.
Allow for the structural stage, the following trades and the making good as three separate blocks. On a structural alterations project at a W6 address the first is usually shorter than Hammersmith homeowners expect and the last longer, particularly in Victorian and Edwardian terraced housing. GS Renovation gives you the week by week programme with the quotation. The Hammersmith and Fulham Council inspections are marked on it in advance. Email info@gsrenovationltd.co.uk and we will send a sample Hammersmith and Fulham programme before the W6 survey.
We build to a design, we do not write one. Where structural alterations in a W6 home involves beams, openings or altered load paths, GS Renovation appoints an independent structural engineer and coordinates them through Hammersmith and Fulham Council sign-off. That separation protects the Hammersmith homeowner. Propping and sequencing on site are then ours to get right. Ring 07472 424 226 and we will explain the Hammersmith and Fulham sequence. The engineer is appointed and paid through the Hammersmith and Fulham contract.
Yes, and often they should be. Sequencing matters more than speed with structural work: propping, then removal, then permanent support, with Hammersmith and Fulham Council inspecting at each defined point. We set that order out for your Hammersmith project before starting.
Rarely, because we expect what the stock throws up. Bay-fronted Victorian and Edwardian terraces with rear closet wings and side returns bring aged materials, uneven floors and occasional unauthorised previous work, none of which stops structural alterations at a W6 address but all of which affect the programme. GS Renovation allows for them in the Hammersmith quotation. Hammersmith and Fulham Council inspects the structural work either way. GS Renovation will happily describe what structural alterations usually reveals once a W6 property in Hammersmith is opened up properly on site.
Internal structural alterations, such as new openings, replacement joists or underpinning, are controlled under the Building Regulations and signed off by Hammersmith and Fulham building control, not planning. You only need planning permission or consent for exterior changes in a conservation area or on a listed building. We tell you clearly which applies to your W6 property.
Yes, across Hammersmith and Fulham and much of West London. Structural alterations take us to Fulham and the surrounding areas regularly, and a property just outside Hammersmith is no harder to service than one at W6. GS Renovation will say plainly if distance makes a job impractical. Email info@gsrenovationltd.co.uk with the address and we will tell you either way. Nothing is owed for asking or for the survey. Aftercare is no harder a few streets further out.
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 Hammersmith. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Hammersmith and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Hammersmith. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.