Steel beam installation, RSJ and structural alterations in Old Street. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs steel beams and RSJs across Old Street and the wider EC1 postcode, where warehouse conversions and new-build apartments dominate the streets around Clerkenwell and the Angel. With over 30 years opening up load-bearing structures in North London, we prop and fit steelwork to the engineer's sizing safely, coordinating the leasehold approvals these Islington buildings demand.

Removing a load-bearing wall in an Old Street warehouse conversion is rarely a simple knock-through. The exposed brick spine walls and cast-iron columns that give these EC1 spaces their character often carry real load, so every beam is sized by a structural engineer before a single brick moves. We prop the structure temporarily, demolish in safe stages, and lower the RSJ onto padstones that spread the weight into sound masonry.
Because most of these buildings are leasehold, the steelwork cannot begin until the freeholder's licence to alter is in place and the managing agent has approved the method. We prepare drawings and calculations for that application, book building control inspections, and time the noisiest cutting to suit block rules. The result is a clean opening signed off under building regulations, with minimal disruption to neighbouring flats.
New-build apartments around Old Street and the Angel are usually framed in concrete or steel, so what looks like a structural wall may be a non-loadbearing partition, or the reverse. We never assume. Our engineer inspects the slab, checks the original build drawings where the managing agent can supply them, and confirms exactly what each wall carries before proposing a beam, a goalpost frame or a simple partition removal.
Party wall matters still arise where a conversion shares a structural wall with the flat next door. You serve the correct notices under the Party Wall Act, agree a schedule of condition, and keep records that protect you if a dispute ever surfaces. Throughout, we work to the sound insulation standards these Islington blocks expect, isolating the new steel so footfall and impact noise do not carry between homes.
Old Street steelwork lives or dies on the paperwork as much as the propping. GS Renovation handles both: engineer's calculations, the freeholder's licence to alter, managing-agent sign-off and building control, all under one roof. Thirty years across EC1 and Islington means we know these conversions, prop them safely and leave you a certified opening, not a snagging list.
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FAQ
It depends on the house, which is exactly why the survey comes first. In recent developments and converted commercial buildings turned over to flats the reinstatement often outweighs the structural element of RSJ and steel beam installation, whereas a newer EC1 property is the other way round. GS Renovation prices the two separately so an Old Street client can see the balance. Phasing the work is then possible if the budget needs it. Ring 07472 424 226 and GS Renovation will talk through phasing options for an EC1 home. 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.
Fewer at once than you might expect, by design. Stacking trades into an EC1 property makes an RSJ and steel beam installation job feel busy while achieving very little, so GS Renovation sequences them and keeps the Old Street site workable. You always know who is due and when. The programme issued with the Islington quotation names each stage and each week. The Old Street programme names who is coming to the EC1 property in each Islington week.
Repeat business and referrals, more than anything else. Most RSJ and steel beam installation enquiries reach us because somebody in Old Street or over in Angel has already had us in their house, and they tell their neighbours what the EC1 job was actually like. GS Renovation is rated 4.9 from 31 MyBuilder reviews. Those are public, so read them before choosing an Islington contractor. Ring 07472 424 226 for addresses of finished work. The Islington referrals speak for themselves.
If the beam bears into a wall shared with a neighbouring property, yes, and that covers most terraces and semis in Old Street. Notice must be served before work begins, and the duty sits with you as building owner. We prepare the notices for your EC1 address.
There can be, and we check before any design work begins. Conservation area status, an Article 4 direction or a listing removes permitted development rights at an EC1 address, so RSJ and steel beam installation may need a full application to Islington Council. GS Renovation establishes the position for your Old Street home first. Building regulations apply regardless of the planning route. Ring 07472 424 226 and we will confirm the designation before any RSJ and steel beam installation design work at EC1.
Almost certainly, yes. Most Old Street properties are leasehold warehouse conversions or new-build apartments, so structural change needs the freeholder's licence to alter and the managing agent's approval before work starts. We prepare the engineer's drawings and calculations for that application, then serve any Party Wall Act notices and arrange building control sign-off so the whole process stays compliant.
Yes, EC1 included, along with every other postcode in Old Street. RSJ and steel beam installation is not priced differently by street, and GS Renovation is usually working somewhere in Islington already. Familiarity with the recent developments and converted commercial buildings turned over to flats around that postcode is what keeps a quotation accurate. Ring 07472 424 226 and we will confirm your address in a minute. The survey that follows is free and carries no obligation. Aftercare and snagging visits across Islington are just as routine.
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 Old Street. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Old Street and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Old Street. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.