RSJ and Steel Beam Installation Kew

GS Renovation installs steel beams and RSJs throughout Kew, where much of the TW9 housing stock is Victorian and Edwardian, including bay-fronted terraces with rear closet wings and side returns. We prop and fit steelwork to the engineer's sizing safely, coordinating structural engineers and Richmond Council building control from the first survey.

In Kew, 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 Kew.

How the job runs

1. Free site survey at your Kew address and an itemised quote.
2. The engineer we appoint sizes the beam, and the work is registered with Richmond 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.

Load-bearing wall removal in Kew terraces

The typical Kew job opens the ground floor of a Victorian terrace, taking down the wall between the front bay and the middle reception, or removing the spine wall into the rear closet wing. Because these walls carry the floors and often the chimney breast above, we never touch them until a structural engineer has calculated the loads and specified the correct beam section, bearing lengths and padstones for your particular house.

Our sequence is careful and staged. We install temporary propping to support the structure, cut back cleanly, then lift the RSJ into position and bed it onto concrete or engineered padstones at each end. Only once the steel is bearing correctly and the propping is transferred do we make good, so the terrace stays stable throughout and your neighbours in the shared row are undisturbed.

Housing in Kew

For Kew the Council Tax list gives about 4,470 homes; by type 43% flats and 57% houses, by age 31% post-war, 6% interwar and 62% older than 1919. A beam in a terrace in Kew often bears on the party wall, bringing in the Party Wall Act, and 31% of homes here are terraced.

Rear openings on Gloucester Road and the Kew Article 4 direction

Richmond lists an Article 4 Direction in conservation area CA2 covering Gloucester Road, Kew, and its guidance says that where a home is subject to one, planning permission is needed for changes that can include new doors and windows. A wide rear opening exists to carry a new set of doors, so on that road read the direction first to see whether it reaches the back of the house. If it does, the planning decision fixes the width and height of the opening, and the steel is designed to the approved size.

So the order on a Gloucester Road job is the direction, then any planning drawings and decision, then the structural engineer we appoint sizes the beam to the approved opening. Richmond's target for deciding householder applications is 8 weeks, and steel ordered before the decision can arrive the wrong length if the door width changes. Kew Green Conservation Area number 2 was designated on 14.01.1969, and a house elsewhere in Kew is worth checking against the direction's map before any glazing is ordered.

Party wall steel work across Kew

In Kew's terraces the dividing walls and chimney stacks usually sit within a shared party wall, so where a beam bears into that wall or we cut a chimney breast back, the Party Wall Act applies. We flag this early, give you the drawings to serve the correct notices on adjoining owners in good time, and allow for any record of the wall's condition the surveyors make before work starts, so relations along the terrace stay friendly and the works proceed without dispute.

Steel that lands on a party wall needs particular care with padstone bearing and the transfer of load into masonry that is decades old and shared with the house next door. We work to the engineer's details, protect the adjoining property, and book Richmond Council building control to inspect the steelwork before it is cased in, so you hold proper sign-off for the completed structural alteration.

When one beam becomes a frame

Plenty of Kew projects need more than a single length of steel. Combine a rear opening with a side-return infill and the structure becomes an L, with a beam along the old rear wall meeting a second beam across the return. Where they meet there is no wall to bear on, so one beam has to carry the other, and the connection between them becomes the critical detail rather than the beams themselves.

The engineer designs that connection: usually a bolted cleat or a welded end plate, sized for the reaction from the incoming beam, sometimes with a stiffener in the web of the supporting section. It is fabricated in the workshop to the drawing, not improvised on site. Assembly order matters too, since the supporting beam has to be in and bearing before the second one lands on it, and the propping is planned around that sequence rather than worked out on the day.

• Level, plumb and deflection checks before props are struck
• Goalpost frames where two walls meet at a corner
• Temporary propping and staged, controlled demolition

VOA Council Tax stock of properties, March 2025, for Kew Gardens. Counts rounded by the VOA.

If you are weighing up RSJ and steel beam installation in Kew, it may help to read home renovation in Kew, RSJ and steel beam installation across Richmond upon Thames, builders in Richmond upon Thames, party walls and steel beams, RSJ and steel beam installation anywhere in London and Party Wall Act Explained.

The GS Renovation Difference in Kew

Kew homeowners choose GS Renovation because we treat steel beam work as the structural job it is, not an afterthought. We coordinate the engineer, the temporary propping along your terrace and building control sign-off as one accountable process, backed by our founder's 30+ years on the tools.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.