RSJ and Steel Beam Installation Fulham

Steel beam and RSJ installation in Fulham, designed by the engineer we appoint and signed off by building control.

GS Renovation installs steel beams and RSJs across Fulham, from the bay-fronted terraces near Bishops Park to the Edwardian streets around Fulham Broadway. We open up load-bearing walls in these period homes safely, with engineered steelwork and building control sign-off from start to finish.

In Fulham, a steel beam for one opening typically costs £1,500 to £4,000 fitted and signed off, or £2,500 to £6,500 or more for a full knock-through with the engineer's fee and making good (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Fulham.

Price guide

WorkIndicative London range
Steel beam, one opening: supply, install, sign-off£1,500 to £4,000
Full knock-through with engineer and making good£2,500 to £6,500+

Indicative London ranges (MyBuilder and Checkatrade, 2026), not a quotation. Prices checked September 2026. Full breakdown: RSJ & Load-Bearing Walls.

How the job runs

  1. Free site survey at your Fulham address and an itemised quote.
  2. The engineer we appoint sizes the beam, and the work is registered with Hammersmith and Fulham Council building control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
  3. Props go in, the opening is cut and the beam is set on padstones, packed tight above.
  4. Building control inspects the steel before it is covered. We make good, and the completion certificate follows.
A GS Renovation tradesman working beneath an installed steel beam, with acrow props still carrying the floor above
Packing and fixing under the seated beam. The props stay in until the bearings are complete and the load is transferred.

Load-bearing wall removal across Fulham SW6

The typical Fulham job removes the wall between the front and rear reception rooms of a bay-fronted Victorian or Edwardian terrace, or the kitchen wall into the rear closet wing. These are almost always load-bearing, carrying floor joists and the weight above, so a structural engineer calculates the beam and we install an RSJ bearing onto concrete padstones at each end.

Before any masonry comes down we set up temporary propping to hold the structure, then work through a safe, staged demolition rather than pulling the wall out in one go. The steel is levelled, seated on its padstones and packed tight so the load transfers cleanly. Building control inspects the padstone bearings and the finished beam before we close everything up.

Housing in Fulham

Count the homes in Fulham and you get about 24,310: 39% built since 1945, 4% between the wars and 58% before 1919, with flats at 76% and houses at 24%. A beam in a leasehold flat in Fulham needs the freeholder's licence for alterations, since the lease usually keeps the structure with the freeholder, which matters here because most homes are flats.

Approving a Fulham beam before the steel is fabricated

In Fulham the order of the paperwork shapes when a beam goes in. Hammersmith and Fulham Council aims to decide a Full Plans application within 5 weeks, though it may take longer. That approval is what we want in hand before the steel is cut to length. A query from the plan checker about a bearing length or a padstone size is cheap to answer on paper and expensive once the section has been fabricated. So the structural engineer we appoint finishes the calculations first, the application goes in, and the fabricator's slot is booked against the likely decision date.

The fee side follows the same sequence. For a Full Plans application the inspection fee is invoiced after the first inspection has been carried out, so that invoice arrives once work has started on site rather than with the application. From there the approved drawings travel with the job: the inspector compares the steel, the bearings and the fire protection against what was approved. At the end, the council's building control service issues a completion certificate on satisfactory completion, which is the document a Fulham buyer's conveyancer will ask to see.

Party wall notices for Fulham terraces

Fulham terraces sit in tight rows, and the dividing wall between you and next door, along with the chimney stacks, usually sits in a shared party wall. When your steel bears into that wall, the Party Wall Act applies, so you serve the correct notices on your neighbours in good time and coordinate with any surveyor appointed under the process.

Getting the party wall matters right protects both you and your neighbour, and it keeps the project moving without disputes halfway through. We plan the notice timing around the build programme so steelwork is not held up. Throughout the job we keep the shared wall stable with propping and careful sequencing, and we clean up thoroughly given how close SW6 neighbours live to the works.

RSJ, universal beam or flitch beam

People say RSJ for any steel, but the engineer chooses from a range and each behaves differently. A universal beam is the usual answer for a wide opening, deep in proportion to its width and efficient at carrying floor load across a span. A universal column section is squatter and gets used where head height is tight or where a post is needed. The old rolled steel joist with its tapered flanges is now rare in new work.

A flitch beam, a steel plate bolted between two timbers, suits a modest load where the beam has to be carried in by hand, which happens often in Fulham terraces with no rear access. Over a small opening a concrete or steel lintel may be all that is required. The size and the type come from the calculation rather than the shape of the hole, and we build to whatever the engineer issues.

  • Party wall process explained, and the beam built to the award
  • Lintel and catnic support to smaller openings
  • Concrete and high-density padstones at every bearing
Service areaFulham · SW6
Local authorityHammersmith and Fulham Council
Part ofWest London (Inner London)
Typical homesVictorian and Edwardian terraced houses, most of them now flats (76% of homes)
Housing stock58% built before 1919, 4% interwar, 39% post-war; 76% flats, 22% terraced, 2% semi-detached or detached
Also covered nearbyParsons Green, Putney, Barnes, Battersea and Hammersmith

VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Fulham. Counts rounded by the VOA.

Why Choose GS Renovation in Fulham

Fulham homeowners choose GS Renovation because we treat steelwork as engineering, not guesswork. Every beam is sized by a structural engineer, propped safely, seated on proper padstones and signed off by Hammersmith and Fulham building control. With our founder's 30+ years on the tools, we coordinate the work around the party wall award, the demolition and the making good as one accountable team.

30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

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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…
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George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
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It's the second time I have hired George and he has been absolutely professional and the work he did resembles perfectly what I had in mind. Being an…
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FAQ

Frequently Asked Questions about RSJ and Steel Beam Installation Fulham

Do you charge for a survey before quoting RSJ and steel beam installation in Fulham?

GS Renovation charges nothing to survey an SW6 property for RSJ and steel beam installation, because pricing RSJ and steel beam installation in Fulham unseen is guesswork. The visit confirms the scope, what approvals it needs (Hammersmith and Fulham Council building control sign-off of the beam and padstones), and where in £1,500 to £4,000 for one beam opening (indicative) the job sits. An itemised figure follows in writing. Call 07472 424 226 or email info@gsrenovationltd.co.uk.

What if a beam is already in place in a Fulham house?

It is assessed before anything is added to it or beside it. Openings formed in Fulham houses over the past few decades often contain steel, and whether it was designed for what it now carries is unknown until it is exposed and measured. The engineer checks the section, the bearings and the padstones against the actual loads. Where it falls short, it is replaced rather than supplemented.

How is the junction between a Fulham house and its rear addition handled?

As two structures meeting, because that is what it is. In your Fulham terrace the rear addition has its own roof, floor and often shallower foundations, and the wall joining it to the main house may carry both. A beam at that junction is designed for the combination. Where a side return infill is also planned, the whole arrangement is designed once rather than in stages.

How are original features protected during steelwork in Fulham?

By recording and covering them before anything is cut. Your Fulham house frequently retains cornices, ceiling roses, joinery and fireplaces close to where an opening is being formed, and vibration and debris damage them readily. Items within the work area are protected in place or carefully removed and stored. Anything that has to be cut is stopped at a deliberate line and made good to match.

Should a Fulham beam be designed with a side return in mind?

Wherever the extension is a realistic prospect, yes. A side return infill at a Fulham property changes what the rear and flank walls carry and where load arrives, so a beam sized only for the present layout may need replacing when the extension follows. Allowing for it now is usually a modest change to the section and avoids opening a finished room a second time.

If a Fulham beam needs a new steel post, does building control inspect the footing?

Yes. Foundation excavations, the covering of foundations and completed foundations are among the council's listed inspection stages, so a pad dug for a post is looked at before concrete goes in. Site inspections need 1 day's notice in most instances. We ring the request through the afternoon before the pad is excavated to depth, which puts the inspector's visit and the concrete pour on consecutive days rather than leaving an open hole in your floor.

Is a Building Notice a cheaper route for steelwork in a Fulham house?

No. Hammersmith and Fulham Council offers both Full Plans and Building Notice applications and states that the two cost exactly the same. It recommends a Building Notice only for very small works and says it should be avoided for complex building work. A beam carrying floors and brickwork is not a very small job, so the Full Plans route costs nothing extra and gives you an approved design before any wall is propped.

Does a steel beam work the same way in a Fulham flat built after 2000?

Not usually. 24% of homes in Fulham were built in 2000 or later, and a block of that age is often a concrete frame with slabs spanning between columns or walls. There may be no brick spine to replace at all, and cutting a concrete wall can affect the whole building. The structural engineer we appoint starts from the block's original structural drawings, which the managing agent may hold, before saying whether an opening is possible.

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