Steel beam installation, RSJ and structural alterations in Chislehurst. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs steel beams and RSJs across Chislehurst, from the bay-fronted Victorian and Edwardian terraces near Chislehurst Common to the substantial homes throughout BR7. With over 30 years of structural experience across Bromley, we remove load-bearing walls safely, working to a structural engineer's calculations and Bromley Council building control sign-off.

In a typical Chislehurst terrace the wall between the front reception and the rear room is load-bearing, and often forms part of a shared party wall with the neighbouring house. Before any demolition, we have a structural engineer calculate the correct beam size, then install temporary propping to carry the floors and roof above. Only once the load is safely supported do we cut out the old masonry in careful, staged sections.
The new steel beam bears onto padstones spread across the remaining brickwork, so the load is transferred down through sound masonry rather than concentrated on a weak point. Where the wall is shared with your neighbour under the Party Wall Act, you serve the correct notices before work begins. Bromley Council building control inspects the beam and its bearings, and the job is signed off with a completion certificate you can keep for any future sale.
Many Chislehurst period homes still have chimney breasts in the front and rear rooms, and homeowners often want the breast removed to reclaim floor space. Because the stack and dividing chimney frequently sit within the shared party wall, this is structural work that needs proper support. We install a gallows bracket or a steel beam to carry the masonry left above, calculated by an engineer rather than guessed on site.
Removing a breast that is shared with the house next door brings the Party Wall Act into play, so notice to your neighbour is part of the process. We prop the retained stack, take down the brickwork in stages, and fit the support before making good the walls, floor and ceiling. Building control checks the work, and we leave the room ready for replastering so your renovation can carry straight on without delay.
Chislehurst homeowners choose GS Renovation because steel work in a period terrace is unforgiving, and we treat it that way. Every beam is sized by a structural engineer, propped correctly and signed off by Bromley Council building control. With 30+ years across BR7 and the wider borough, we coordinate the work around the party wall award, staged demolition and making good as one accountable job.
George was a great find. The job required re-plastering the walls before fitting acrylic panels. He also re-plumbed the shower waste under the solid…
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…
George is a very hard working builder, and has done a fantastic job on replacing my Bathroom. His attention to detail was great and I wouldn't…
FAQ
The scope is written out rather than implied. For a Chislehurst property the RSJ and steel beam installation quotation lists the structural work, the trades that follow it, the Bromley Council inspections and the making good that Victorian and Edwardian terraced construction usually needs. Site protection and the daily clear-up at BR7 are included as standard. GS Renovation does not treat basic care of your house as an extra. Ring 07472 424 226 and we will confirm what applies at your BR7 address. 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.
Days rather than weeks, if it is managed properly. The risk on an RSJ and steel beam installation project in a Chislehurst home is reaching the point where the BR7 steelwork is ready to be boxed in with no inspection booked, which is what GS Renovation avoids. The application to Bromley Council goes in early. You receive the certificate at the end, which matters when a Bromley property is sold. Ring 07472 424 226 and we will explain the Bromley Council route for a BR7 project.
No, and no contractor should. GS Renovation appoints and coordinates a structural engineer where RSJ and steel beam installation at your BR7 property requires a design, then builds to their specification and has it inspected by Bromley Council. The calculations are the engineer's professional responsibility. Any builder in Chislehurst claiming to produce them in-house is worth questioning closely. Ring 07472 424 226 and we will explain how a Bromley appointment works. The calculations belong to you and to the Bromley record.
Yes, on any load-bearing opening. The floor and walls above are carried on adjustable props while the masonry comes out and the steel goes in. Getting the propping right at your BR7 property is the part that protects the rest of the Chislehurst house.
More opening up than a modern house requires. Before RSJ and steel beam installation proceeds at a BR7 property, GS Renovation confirms what is actually carrying load, because two and three-bedroom Victorian terraces, a good many now split into flats rarely match their drawings. Services and drainage are checked at the same time. The Chislehurst quotation then reflects what is there rather than what was assumed in Bromley. Ask on 07472 424 226 what RSJ and steel beam installation normally involves opening up at a BR7 address in Chislehurst before anything else.
Usually yes. In most Chislehurst terraces the wall you are opening up or the chimney stack you are removing sits within the party wall shared with your neighbour, so the Party Wall Act applies. you serve the correct notice before work starts. The beam itself is a building regulations matter, sized by a structural engineer and signed off by Bromley Council building control.
Regularly, though we do not pretend to cover everywhere. The RSJ and steel beam installation patch runs across Bromley and into neighbouring parts of South East London, which is wide enough to include most enquiries we receive from around BR7. GS Renovation would rather decline a job than take one it cannot service properly. Ring 07472 424 226 and ask about your Chislehurst address. The answer comes the same day. The BR7 survey costs nothing and carries no obligation.
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 Chislehurst. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Chislehurst and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Chislehurst. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.