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.
The first thing owners notice in a Greenwich house is that two rooms start behaving as one, and that has consequences beyond the view. Heat moves freely, so a room that used to warm quickly now takes longer, and radiators sized for two small spaces may not suit one large one. Sound carries from end to end, which matters a great deal if one half of the new space is a working kitchen. Insulation on the exposed rear wall is worth reviewing at the same time, while the room is stripped and the access is easy.
The room also gains something less obvious, which is usable wall. A dividing wall with a door in it wastes both sides of the doorway, and once it has gone the furniture can sit where it makes sense rather than where circulation allowed. In SE10 and SE3 houses with a good rear aspect, the biggest single change is that the garden becomes visible from the front of the house for the first time.
Homeowners across Greenwich choose GS Renovation because we treat structural work as the serious job it is. One team manages the engineer, the propping 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.
He was very very good. He just got on with the job and we was beey pleased with the result. He Also cleaned everything away when he finished. Will…
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good…
We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
FAQ
It can, and we would rather say so before quoting. In a Georgian and early Victorian home the unknowns behind plaster are what move an RSJ and steel beam installation figure, which is why the SE3 survey matters more here than on a new estate. GS Renovation prices the visible work, names the risks, and agrees anything additional with a Greenwich homeowner in writing. That is standard across Greenwich. Ring 07472 424 226 and we will describe the checks an SE3 property needs. 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.
Sooner if the survey happens sooner. The constraint on starting RSJ and steel beam installation at an SE3 address is rarely labour; it is approvals and material lead times, both of which GS Renovation sets running as soon as the Greenwich scope is agreed. We do not open a house we cannot then finish. Email info@gsrenovationltd.co.uk and we will book a free Greenwich visit. Ring 07472 424 226 and we will confirm the next free week in Greenwich or Lewisham.
Aftercare is part of the job rather than an afterthought. Once RSJ and steel beam installation at your Greenwich home is complete, GS Renovation provides the Royal Borough of Greenwich certificate, the engineer's documentation where the design required one, and the guarantee on installations. Snags at SE3 are dealt with by the same team. Most of our Greenwich work comes from people we have already looked after. Email info@gsrenovationltd.co.uk to reach us. The certificate and the guarantee are handed over together at SE3.
Almost any wall can be opened up, but what the beam has to carry and what it bears onto change completely. In a Greenwich property the load path matters more than the wall itself, which is why an engineer assesses the SE3 address before we quote.
Yes, and the age of the building is rarely the deciding factor. What matters for RSJ and steel beam installation is what the SE3 structure is carrying and what Royal Borough of Greenwich requires, both established before design. GS Renovation appoints the engineer where the work needs one. The Greenwich survey is free and carries no obligation in Greenwich. Ask on 07472 424 226 exactly what RSJ and steel beam installation depends on at an SE3 address in Greenwich before you decide anything at all.
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.
There is no part of Greenwich we would exclude. RSJ and steel beam installation is carried out throughout the area and the SE3 area and across neighbouring Greenwich, on terraces, semis and flats alike. GS Renovation knows how stucco-fronted townhouses and early Victorian villas with deep basements are built, which is what makes an SE3 quotation accurate. Email info@gsrenovationltd.co.uk and we will book a free survey. Building control goes through Royal Borough of Greenwich in the usual way. Small jobs and whole-house programmes are both quoted on the same basis.
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:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Greenwich and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Greenwich. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.