Steel beam installation, rsj and structural alterations in Barnes. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Barnes, where bay-fronted Victorian and Edwardian terraces in SW13 hide load-bearing walls between reception rooms and rear closet wings. With more than 30 years of structural work in South West London, we open up these period homes safely, from engineer's design through to building control sign-off.

Most Barnes knock-throughs involve the spine wall of a Victorian terrace, the masonry that carries the floor joists and often part of a chimney stack. Our structural engineer sizes the RSJ to the loads above, specifies concrete or steel padstones at each bearing, and we prop the structure temporarily before any demolition begins. Only then do we cut out the wall in stages, so nothing above is ever left unsupported.
Because the dividing wall and chimney breast in a SW13 terrace usually sit on a shared party wall, most beam projects here need notice served under the Party Wall Act to your neighbour before work starts. We flag this early, help you appoint a surveyor if needed, and coordinate the schedule so the steel goes in on time. Every beam is inspected and signed off by building control under the Building Regulations.
Where Barnes homeowners infill the side return to widen a kitchen, the outer wall of the closet wing has to be picked up on steel so the space can flow uninterrupted. We design goalpost frames, with a horizontal beam bolted to vertical posts on padstones, to hold the existing structure while the old wall comes out. This keeps head height and lets natural light reach deep into the plan.
Steel sizing is never guesswork. A structural engineer calculates each beam for the specific loads in your Barnes property, whether that is a single reception opening or a full rear structural opening carrying the storeys above. We handle the temporary works, the padstone bearings and the fire protection to the finished steel, then arrange building control inspection at the key stages. You are left with a solid, compliant opening ready for plastering and finishing.
Barnes homeowners choose GS Renovation because we treat steel beam work as structural engineering, not demolition. One team manages the engineer's design, the party wall notices common in SW13 terraces, the temporary propping and the building control sign-off, with 30+ years behind every job. You get a clean, safe opening and honest advice about what your period home can carry.
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.
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.
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!
FAQ
There is no fixed price for RSJ and steel beam installation in Barnes, because so much depends on your property and what you want to achieve. We survey first, then provide a transparent written quotation. Contact GS Renovation on 07472 424 226 for a free estimate. As a rough guide, RSJ and steel beam installation in London runs roughly £1,500 to £4,000 for the beam itself on a single straightforward opening, covering supply, installation and building control sign-off; a full knock-through including taking the wall out, the structural engineer's fee and making good more typically comes to £2,500 to £6,500 or more (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.
We will give you an honest timescale for RSJ and steel beam installation in Barnes 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.
GS Renovation knows Barnes's homes and how to renovate them properly. We handle the structure, the services and the finishes, deal with building control for you, and leave you with work that is certified, guaranteed and built to last.
Removing a load-bearing wall in Barnes does not normally need planning permission, but it always needs building regulations approval, a structural engineer's calculations and building control sign-off. Where the wall is shared with a neighbour, the Party Wall Act may also apply. We manage all of it.
Yes. A large share of Barnes's homes are Victorian and Edwardian terraced properties, and we renovate them regularly. We plan each RSJ and steel beam installation 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.
Usually yes. The spine wall and chimney breast in a Barnes Victorian terrace often sit within the party wall shared with next door, so cutting in a beam means serving notice under the Party Wall Act. Removing the wall itself needs building control approval under the Building Regulations, not planning permission. We arrange the engineer's design and guide you through both, so the job is fully compliant.
We cover the whole of Barnes and the SW13 area and the surrounding South West London. If you are nearby and not sure, just call 07472 424 226 and we will tell you straight away.
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 Barnes. Explore what else we do locally:
Safe load-bearing wall removal with steel beam support.
Structural alterations, new openings and steel support.
Chimney breast removal with gallows bracket or beam support.
Open-plan kitchen, diner and living conversions.
Single and double storey extensions.
Full refurbishments and whole-house renovations.
Bespoke kitchen design and installation.
Luxury bathroom and wet-room refurbishment.
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Barnes and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for RSJ and steel beam installation in Barnes.
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