Steel beam installation, rsj and structural alterations in Streatham. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs steel beams and RSJs throughout Streatham, where bay-fronted Victorian and Edwardian terraces line the SW16 streets. With over 30 years of structural building across Lambeth, we open up these period homes safely, removing load-bearing walls and carrying the loads onto correctly sized steel and solid padstones.

The typical SW16 terrace has a solid brick wall between the front bay reception and the middle room, and another where the rear closet wing meets the main house. Both are usually load-bearing. Before any demolition we have a structural engineer size the beam to the loads above, then we install temporary props to take the weight while the old brickwork comes down in a controlled, staged sequence.
The new RSJ bears onto concrete or engineered padstones spread across the remaining masonry, so the point loads transfer safely into the wall. We check the bearings, pack and pin the steel, then make good before the props come out. Every beam in Streatham is signed off by Lambeth building control, giving you documented proof the structure is sound for the future.
Streatham terraces share a party wall with the neighbours on each side, and chimney breasts and dividing walls often sit within that shared structure. Where a beam bears into or cuts into a party wall, the Party Wall etc. Act 1996 applies. We flag this early so you can serve the correct notices on adjoining owners well before work starts, avoiding disputes and delays.
Cutting a beam pocket into a party wall demands care, because you are working within masonry your neighbour relies on too. We prop from both sides where needed, form clean bearings and keep the neighbouring wall stable throughout. Good notice, tidy method and clear communication with adjoining owners keep these SW16 projects running smoothly from first prop to final sign-off.
Streatham homeowners choose GS Renovation because we treat steelwork as the structural heart of the job, not an afterthought. We coordinate the engineer, propping, padstones and Lambeth building control, and we handle party wall notices for shared walls. Thirty years across SW16 means we know how these terraces are built and how to open them up safely.
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
Every Streatham project is priced on its own merits, as the cost of RSJ and steel beam installation varies with the size, specification and condition of the home. We give a clear, itemised quote up front with no obligation. Call 07472 424 226 for an estimate tailored to your property. 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.
Timescales for RSJ and steel beam installation in Streatham vary with the size and complexity of the job. After our survey we give you a realistic schedule and keep you updated at every stage of the project.
GS Renovation's team brings over 30 years of hands-on experience to RSJ and steel beam installation and wider building work across Streatham and the surrounding area. We offer free quotes, a dedicated project manager, full insurance, building control compliance where required, and comprehensive aftercare.
Removing a load-bearing wall in Streatham 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 Streatham'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.
Very often yes. Streatham terraces share a party wall with the house next door, and if the new steel bears into or cuts into that shared wall, the Party Wall etc. Act 1996 applies. You must serve notice on the adjoining owner first. We identify this at survey and guide you on timing so the notices are served before demolition begins.
We do. GS Renovation covers all of Streatham and the SW16 area and the wider South London. Call 07472 424 226 and we will confirm we work on your road.
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 Streatham. 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 Streatham 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 Streatham.
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