Steel beam installation, rsj and structural alterations in Deptford. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs steel beams and RSJs across Deptford, from the Georgian and Regency townhouses off the high street to the SE8 warehouse conversions near the creek. With more than 30 years of structural experience, we remove load-bearing walls safely, working within the constraints of period and often listed buildings in Lewisham's conservation areas.

Many Deptford homes are solid-brick Georgian and Regency properties where the internal dividing walls carry real load. Before any wall comes out, our structural engineer calculates the beam size and specifies the padstones the RSJ will bear onto. We set up temporary propping, then carry out a staged, controlled demolition so the structure is never left unsupported. This measured approach matters in older SE8 houses where the masonry has settled over two centuries.
Because so many of these townhouses are listed or sit within a Lewisham conservation area, we treat original features with care, saving cornicing, joinery and fireplaces where the works allow. Every beam installation is notified to building control and signed off on completion, giving you the certificate you will need when you sell. Where the wall is shared with a neighbour, we also handle the Party Wall Act notices before work begins.
In Deptford's tightly packed terraces and townhouses, the wall you want to open is frequently a party wall shared with the house next door. Under the Party Wall Act you must serve formal notice on the adjoining owner before cutting a bearing into that wall or inserting a beam. We prepare and serve those notices, allow the statutory notice period, and coordinate with any surveyor the neighbour appoints so the project keeps moving.
The steelwork itself is only as good as its bearings. We form solid padstones at each end, usually in concrete or engineering brick, so the RSJ transfers its load cleanly into the existing masonry. On larger openings across a double reception or a kitchen knock-through, the engineer may specify a heavier universal beam or twin sections bolted together. We size, prop, install and case in the steel, then leave it ready for plastering.
Deptford homeowners choose GS Renovation because we understand the quirks of solid-wall Georgian and listed properties, and we manage the whole process from engineer's calculations to building control sign-off. One team handles the propping, the steel, the padstones and any party wall notices, working cleanly in an occupied home and backed by more than three decades across Lewisham.
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 Deptford 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.
How long RSJ and steel beam installation takes in Deptford depends on the size of the job, but we always agree a programme before starting and stick to it, keeping you informed from the first day to the last.
GS Renovation's team brings over 30 years of hands-on experience to RSJ and steel beam installation and wider building work across Deptford 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 Deptford 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 Deptford'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. Most Deptford terraces and townhouses share a party wall with the neighbouring property, and cutting a beam bearing into that wall triggers the Party Wall Act. You must serve written notice before starting. We prepare the notices, observe the statutory period and coordinate with the adjoining owner's surveyor, then install the steel onto proper padstones with building control sign-off.
We cover the whole of Deptford and the SE8 area and the surrounding South East London. If you are nearby and not sure, just call 07472 424 226 and we will tell you straight away.
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 Deptford. 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 Deptford 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 Deptford.
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