Steel beam installation, RSJ and structural alterations in Brixton. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Brixton, from the bay-fronted Victorian and Edwardian terraces of SW2 to homes near Brockwell Park. With more than 30 years of structural experience in Lambeth, we prop and set every beam to the engineer's sizing correctly, remove load-bearing walls safely and hand over clean building control sign-off.

The dividing wall between the front and middle reception in a Brixton terrace is almost always load-bearing, carrying floor joists and often a chimney breast above. Before any demolition, our structural engineer calculates the load and specifies an RSJ, its bearing length and the padstones it lands on. We install temporary props, cut the opening in careful stages and never disturb the structure until the steel is fully supported.
Padstones spread the concentrated load into the surrounding brickwork, which matters in these older SW2 properties where mortar can be soft and walls solid rather than cavity. Once the beam is seated and levelled, we build it in, protect it for fire resistance where required and arrange the building control inspection. Every stage is documented so the completed structural opening passes without fuss and leaves you with proper paperwork.
Many Brixton terraces share their side wall or a chimney breast with the house next door, so cutting a beam pocket into that shared wall brings the Party Wall Act into play. Where the steel bears on a party wall, you must serve notice on your neighbour before work starts. We flag this early, explain the notice period and coordinate with your party wall surveyor so nothing stalls the build.
Removing a chimney breast on a Brixton terrace is a common request, but the stack above still needs support. We install gallows brackets or a beam so the remaining brickwork stays safe, again with engineer's calculations and building control sign-off. Working in occupied SW2 homes, we prop and protect as we go, keep dust down with sheeting and clear the site each day so you can live around the works.
Brixton homeowners choose GS Renovation for steel work because we handle the whole chain, the engineer's design, the propping, the demolition and the building control inspection, as one accountable team. With 30+ years across Lambeth, we know how these solid-walled SW2 terraces behave, you serve party wall notices correctly and we leave every opening safe, level and signed off.
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
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 always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
FAQ
As accurate as the information behind it. An RSJ and steel beam installation figure given over the phone for a Brixton home will move; one written after we have looked carefully at the SW2 property usually does not. GS Renovation allows for the making good that late Victorian and Edwardian construction demands, and shows the Lambeth Council element separately. That is why our Lambeth quotations tend to hold. Ring 07472 424 226 to book the free survey at your SW2 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.
Very little, provided the inspections are booked ahead. Lambeth Council needs to see the structural work on an RSJ and steel beam installation job at an SW2 property before it is concealed, so GS Renovation schedules those visits into the Brixton programme rather than calling at the last minute. The completion certificate follows the final inspection. Waiting on paperwork in Lambeth is a planning failure, not an inevitability. GS Renovation attends every Lambeth Council inspection at the SW2 property on your behalf.
We do not sell your job to whoever is cheapest that week. RSJ and steel beam installation at a Brixton property is delivered by the team that quoted it, which is why GS Renovation can commit to a programme at SW2 and hold it. Specialist trades come under our coordination and our insurance. Ask any Lambeth contractor who will actually be on site before signing. Ring 07472 424 226 to compare. The named SW2 manager is on the Lambeth site, not a broker.
The bearings and padstones before they are covered, and the beam itself against the engineer's calculations. Lambeth Council will want to see the steel in place and correctly supported at your Brixton property before it is boxed in, so the inspection has to be booked at the right moment.
Carefully, and in a defined order. We survey the SW2 property, confirm what the structure is doing, appoint an engineer where RSJ and steel beam installation requires a design, then prop, remove and support in sequence. GS Renovation agrees with the Brixton homeowner beforehand which original features are being protected. Lambeth Council inspects before anything is concealed. GS Renovation will set out the whole RSJ and steel beam installation sequence planned for your SW2 home in Brixton before anything at all starts.
Often, yes. If the steel bears on the wall you share with a neighbour, or you cut into a shared chimney breast, the Party Wall Act applies and you must serve notice before work begins. We identify this at survey stage, help you issue the correct notices and coordinate with the surveyor so your beam installation stays on schedule.
Yes, boundaries are not something we price against. RSJ and steel beam installation runs across Lambeth and into South London, so an address on the edge of Brixton or over towards Clapham is no harder to service. GS Renovation will say plainly if travel makes it impractical. Ring 07472 424 226 with the SW2 postcode and we will confirm. The survey that follows is free and carries no obligation. Aftercare is no more difficult a few streets further out.
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 Brixton. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Brixton and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Brixton. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.