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All structural engineers

Structural engineers in London

59 practices covering London. Listings are business information researched by Renovome; contact details and matching happen inside Workspace.

Appointing a structural engineer in London

Most London structural engineer appointments are beam and steel design for rear openings and side returns, loft floor design, underpinning or basement retention, and reports on cracking in terraced houses. Engineers price by the number of structural elements, not by the size of your house.

Property you'll be working with in London

Victorian and Edwardian terraces on shallow, often un-reinforced foundations, with neighbours attached on one or both sides. Party wall structures mean almost any opening or loft floor affects an adjoining owner, so the engineer's drawings feed straight into the party wall procedure.

Planning in London

Structural design is a building regulations matter, not a planning one, but London building control bodies routinely require calculations before work starts, and basements need a separate structural method statement plus, in many boroughs, a basement impact assessment.

What structural engineers charge in London

£900 to £2,800 for a typical extension or loft in 2026, £550 to £1,100 for single-beam calculations, and £700 to £1,500 for a written report on a crack. Basement and underpinning design runs £3,000 to £9,000.

Indicative 2026 ranges and local context, not quotations or planning advice. Last reviewed: September 2026.

How to choose a structural engineer in London

You need a structural engineer whenever load paths change: removing a wall, forming an opening, adding a loft floor, or building foundations near a neighbour. Building control will ask for their calculations.

  1. Check for chartered status with the IStructE or ICE.
  2. Ask whether site inspections and building control queries are included.
  3. Send the architect's drawings with your enquiry so the quote is for the real job.
  4. Ask how quickly calculations can be issued, as this often sets the start date.
  5. Confirm professional indemnity insurance cover.

What structural engineers in London typically work on

  • Beam and steel design for openings
  • Loft floor and dormer structure
  • Foundation and underpinning design
  • Chimney breast removal
  • Structural inspections and reports

Typical 2026 fees for structural engineers

ItemTypical 2026 cost
Single beam calculation£450 - £850
Extension structural package£750 - £1,800
Loft conversion calculations£750 - £1,600
Site inspection and letter£300 - £600
Structural survey report£600 - £1,400

Indicative 2026 UK ranges, not quotations. London and the South East usually sit at the top of each range. Last reviewed: September 2026.

Common questions

Do I need a structural engineer as well as an architect?
Usually yes. The architect designs the space; the engineer proves the structure stands up and issues the calculations building control requires.
What does a structural engineer cost in 2026?
From about £450 for a single beam calculation to £1,800 for a full extension package.

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