Steel beam installation, rsj and structural alterations in Greenwich. Trusted, professional, 30+ years' hands-on experience.
GS Renovation has installed steel beams across Greenwich for more than 30 years, from the Georgian townhouses near Greenwich Park to the Victorian terraces of Charlton and Woolwich. Many SE3, SE10 and SE18 homes have solid load-bearing walls and shared party walls, so removing them safely calls for engineered RSJs, careful propping and building control sign-off.

Greenwich's Georgian and Regency townhouses were built with thick solid brick walls that carry the floors and roof above. When you want to open up a room in SE3 or SE10, that wall cannot simply come out. Our structural engineer sizes an RSJ to carry the load, and we cast concrete padstones at each end so the beam bears properly onto sound masonry rather than crushing old brickwork.
Before any brick is cut we install temporary propping, needle the wall where required, and demolish in careful stages so nothing moves. Once the steel is seated and levelled, we build in the padstones, fireproof the beam and hand everything to building control for inspection. Across Woolwich, Charlton and Eltham this staged method keeps period floors and ceilings intact while the new opening is formed.
In Greenwich terraces the wall between you and your neighbour is usually a shared party wall, and chimney stacks often straddle it. If your beam bears on that wall, the Party Wall Act applies and your neighbour must be served notice before work starts. We help you identify which walls are shared, so the legal side is handled early rather than holding up the build in SE7 or SE18.
Listed status and conservation areas are common near Greenwich Park and Blackheath, and while internal steelwork is a building regulations matter rather than planning, listed buildings need extra care and sometimes listed building consent. We coordinate the engineer's calculations, the padstone details and the building control inspections, then finish the opening neatly so the new steel disappears into the room.
Homeowners across Greenwich choose GS Renovation because we treat structural work as the serious job it is. One team manages the engineer, the propping, the party wall notices and building control, with 30+ years of removing walls in SE3, SE9, SE10 and SE18. You get safe staged demolition, correctly sized steel and a clean, signed-off opening.
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 Greenwich, 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.
A straightforward Greenwich project can be done in a couple of weeks, while a larger RSJ and steel beam installation with structural work runs longer. We set out a realistic, stage-by-stage programme before we begin so there are no surprises.
Greenwich homeowners choose GS Renovation for reliability and quality. We are fully insured, building control compliant where needed, and bring over 30 years of hands-on experience to every RSJ and steel beam installation project, with a single point of contact throughout.
Removing a load-bearing wall in Greenwich 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 Greenwich's homes are period, Georgian and listed properties, and we renovate them regularly. We plan each RSJ and steel beam installation around their particular characteristics, such as conservation and listed-building rules, solid walls and original period features, so the result suits the building and meets building control.
Usually yes. In most Greenwich terraces the dividing wall is a shared party wall, and if your new steel beam bears onto it the Party Wall Act applies. You must serve your neighbour written notice before work begins. We help you establish which walls are shared and get the engineer's design ready so the notice period runs alongside the build, not after it.
We do. GS Renovation covers all of Greenwich and the SE3 area and the wider South East 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 Greenwich. 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 Greenwich 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 Greenwich.
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