Steel BeamInstallers
Rear extension under construction with a steel beam over the opening into the house

Areas · England

Steel beam installers in London

Load-bearing walls, knock-throughs, openings and steelwork across London, with calculations and approvals arranged.

  • Itemised written quote
  • Beam sized by a structural engineer
  • Covering London and nearby

Free survey in London

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  • Free survey visit
  • Engineer's calculations arranged
  • Building control handled
  • Fixed written price once scope is agreed
  • England, Wales, mainland Scotland & NI

Steel beam work in London

We fit steel beams and RSJs across London: load-bearing wall removal, knock-throughs, chimney breasts, openings for extensions and bi-folds, loft and basement steels. Coverage takes in Ilford, Archway and Enfield Town and everywhere in between. Every job includes calculations from a structural engineer and the right approval for England.

Approval in London is through council building control or a registered building control approver, and party wall notices apply where steel bears into a shared wall.

Guide prices in London

As a guide, budget £2,550–£6,400 including VAT for load-bearing wall removal with steel beam in London, based on published UK cost guides adjusted for London prices (+28%).

JobTypical guide rangeWhat it usually covers
Load-bearing wall removal with steel beam£2,550–£6,400Typical internal wall up to about 4 m: calculations, building control, propping, steel, padstones, fitting, fire protection and making good
Chimney breast removal (ground floor)£1,900–£3,850Ground-floor breast removed, steel to support the breast above, building control and making good
Rear wall opening for bi-fold or sliding doors£3,200–£8,950External wall opened up to about 5 m with steel, propping, cavity tray and making good (doors supplied separately)
Loft conversion steels£3,200–£7,700Supply and fit of floor and ridge steels on padstones, including lifting into the roof space
Structural calculations for a beam£320–£960Site measure or photos, beam and padstone design and calculations for building control

Figures include our approximate regional adjustment for London prices (+28%) and are rounded. How these figures are worked out.

Building rules in London

For London, building control is provided by the local council's building control team, or by a registered building control approver if preferred. We send them the engineer's calculations with a building notice or full plans application and book the inspections. Work done without approval can cause problems at sale and is far dearer to put right later.

Terraced and semi-detached homes often need party wall notices, because cutting into a shared wall to take a beam end is notifiable under the Party Wall etc. Act 1996. Allow at least two months for the notice period unless your neighbour agrees sooner.

Building rules in England

Steel beams in London: questions

Who approves steel beam installation in London?

Structural work in London needs a building notice or full plans application to the local council's building control team or a registered building control approver. We prepare and submit it with the structural engineer's calculations and arrange the inspections, so the completion paperwork follows the job.

Which towns in London do you cover?

We cover towns including Brent, Islington, Westminster and Bexley, plus the villages and smaller towns around them.

How soon can steel beam installation start in London?

Start dates depend on the engineer's calculations, the building control approval and, where needed, party wall notice periods. We give you a realistic timetable after the survey and keep you updated as each approval comes through.

What happens at the survey visit in London?

We look at the wall, the floor and ceiling either side and what sits above, measure the opening you want, and note cables, pipes and access for the steel. It usually takes under an hour and there is no charge.

Do I need a party wall agreement for steel beam installation in London?

Yes, if the beam bears into a shared wall: the Party Wall etc. Act 1996 applies in England and Wales, and a party structure notice must be served at least two months before that work starts. We arrange it through a party wall surveyor.

Planning to take a wall out?

Book a free survey visit. You get an itemised written quote covering calculations, building control, steel and making good.