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Greater London & Surrounding Areas

Structural Engineer London

Looking for a structural engineer in London? We provide fixed-fee structural calculations from £245 for load bearing wall removals, RSJ beams, loft conversions, extensions and structural alterations across Greater London. Building Control-ready within 24 to 72 hours.

Based in Uxbridge in west London, we work across all 32 London boroughs. London's housing stock — Victorian and Edwardian terraces, interwar semis, mansion blocks and new-build flats — each have different structural requirements. We know the differences and factor them into every calculation.

Get a Fixed-Fee Quote Our Services

Get a Quote

We respond to London enquiries within 24 hours.

Fixed fee confirmed before we start. No obligation.

Structural Engineer London Cost Guide (2026)

Fixed-fee structural engineer London costs — confirmed in writing before we start. No hidden hourly rates.

ServiceTypical Fee (London, 2026)What Is Included
Load bearing wall removal / RSJ London£245 to £450Beam sizing, padstone design, masonry checks
Structural alterations London£300 to £900Chimney breasts, new openings, floor changes
Rear / side extension London£450 to £750Foundations, masonry checks and steelwork
Loft conversion structural calculations Londonfrom £550Ridge beam, floor joists, dormer supports
Structural inspections London£350 to £650Cracks, subsidence, movement, pre-purchase
Basement / retaining wall LondonFixed fee quoteUnderpinning, temporary works, retaining structures
All London fees exclude VAT. Complex layouts or site visits quoted individually. Full guide: structural engineer costs UK.
Load bearing wall removal London from £245. Most kitchen knock-throughs are delivered the next working day. See our full guide to wall removal costs for the complete project budget.

Load Bearing Wall Removal London

Load bearing wall removal is the most common structural job in London homes — kitchen knock-throughs, through-lounges, bi-fold openings and rear walls. Here is exactly what is involved.

What load bearing wall removal involves

When a load bearing wall is removed in a London property, the loads above — floors, walls, roof — need to transfer to a steel beam (RSJ) and down to the foundations. A structural engineer calculates the correct beam size, padstone dimensions and masonry bearing details. This full calculation pack goes to your London borough's Building Control before the builder can start.

Load bearing wall removal London calculations start from £245 and are delivered in 24 to 72 hours. Full wall removal guide

London-specific wall removal considerations

London's Victorian and Edwardian terrace stock is the most common load bearing wall removal context. Party walls between adjacent properties need careful consideration — removing a wall close to a party wall can affect the neighbour's structure. We flag this when it applies.

Mansion blocks and purpose-built flats often have concrete or steel frame construction where walls are not load bearing at all — or where the frame itself needs checking. Post-war estates across London use non-standard construction that affects padstone sizing. We identify the construction type from drawings and photos before quoting.

Structural Alterations London

Structural alterations is the term London Building Control uses for any work that modifies how a property carries load — not just wall removals.

What counts as a structural alteration?

Structural alterations London projects include: load bearing wall removals, chimney breast removals, new openings in walls or floors, floor alterations, raising roof heights and any work that changes the load path through a building. London Building Control requires a structural engineer's calculation pack for all of these before approving the work. Structural alterations London calculations start from £300.

Structural alterations west London and north London

West London boroughs — Ealing, Hounslow, Hammersmith, Kensington and Chelsea — have a high proportion of Victorian and Edwardian terraces undergoing open-plan conversions, rear extensions and chimney breast removals. North London boroughs — Barnet, Haringey, Camden, Islington — similarly have dense terrace and semi-detached stock with active alteration demand. We cover both areas at the same fixed fee and turnaround.

Structural Engineer West London

Based in Uxbridge, we are a structural engineer West London homeowners and builders rely on for fast, fixed-fee calculations across all west London boroughs.

Ealing & Hounslow

Wall removals, loft conversions and rear extensions in Acton, Hanwell, Southall, Chiswick, Brentford and Isleworth. Victorian and Edwardian terraces predominate.

Hammersmith & Fulham

Open-plan kitchen conversions and chimney breast removals in Hammersmith, Shepherd's Bush, Parsons Green and Barons Court. Party wall implications common.

Hillingdon & Uxbridge

Our base area — all Hillingdon, Uxbridge, Hayes, Northolt, Ruislip and West Drayton projects handled with same-day quotes and 24-hour turnarounds.

Kensington & Chelsea

Basement extensions, structural alterations in listed buildings and RSJ designs for period properties in Notting Hill, Holland Park and Kensington.

Structural engineer west London: same fixed fee and turnaround for all W, UB, TW and outer west London postcodes. No distance surcharge.

Structural Engineering Services London

Fixed-fee residential structural engineering across all 32 London boroughs — RSJ beams, loft conversions, extensions, basement work and structural reports.

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RSJ Beams & Wall Removal London

Steel beam calculations for kitchen knock-throughs, through-lounges and rear openings from £245. Beam sizing, padstones and a full Building Control pack for your London borough. Wall removal guide

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Loft Conversions London

Ridge beams, floor joists and dormer framing from £550. London's Victorian terrace stock has low ridge heights — we design the structural upgrade to maximise usable headroom while meeting Building Control requirements. Loft conversion guide

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Extensions London

Rear and side extension packs from £450. London's terrace properties often have tight plots and shared boundaries — we design practical structures that maximise usable space within planning constraints. Extension guide

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Basements & Retaining Walls

Basement extensions, underpinning and retaining wall design for London properties. London's varied ground conditions — London clay, gravel terraces, made ground — require site-specific foundation assessment. Fixed fee quoted after initial drawings are reviewed.

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Structural Reports London

Pre-purchase structural reports, crack assessments and subsidence investigations from £350. London clay shrink-swell movement is one of the most common causes of cracking in London homes — we distinguish cosmetic from structural. Report guide

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Building Control Compliance

Every calculation pack is Building Control-ready for your London borough. We work with all 32 councils and private approved inspectors. Inspector queries answered at no extra charge. Professional Indemnity Insurance held throughout.

Coverage Across Greater London

We provide structural calculations for all 32 London boroughs at the same fixed fee and turnaround.

West London

Ealing, Hounslow, Hammersmith, Hillingdon, Kensington & Chelsea, Richmond. Our home area — fastest turnaround for W, UB and TW postcodes.

North London

Barnet, Haringey, Enfield, Camden, Islington, Hackney. Victorian and Edwardian terrace stock with active loft and extension demand.

South London

Wandsworth, Lambeth, Merton, Croydon, Kingston. Interwar semis and Victorian terraces, common for rear extensions and through-lounges.

East & SE London

Hackney, Tower Hamlets, Newham, Greenwich, Lewisham, Southwark, Bromley. Mix of Victorian terraces, post-war estates and new-build developments.

How It Works

A straightforward four-step process from enquiry to Building Control submission.

1

Send drawings and photos

Plans, a sketch or photos with your London postcode. We identify the construction type from this and confirm the scope.

2

Fixed fee confirmed

Clear fixed price in writing before any work begins. Same-day quotes for most London residential projects.

3

Calculations delivered

Beam sizing, padstones and connection details in a PDF pack for your London borough Building Control and builder. 24 to 72 hours.

4

Build support

If Building Control or your builder has queries, we respond directly. Inspector queries included in the fixed fee.

What London Clients Say

Recent feedback from homeowners and builders across Greater London.

★★★★★

"SECalcs explained everything in plain English and turned our extension calculations around in two days. Building Control asked one question which they handled the same day."

Amelia W, Wandsworth

★★★★★

"Needed an RSJ for a through-lounge wall removal in our Ealing terrace. Checked the foundations, sized the steel, provided padstone details. Building Control passed it first time."

Priya S, Ealing

★★★★★

"Wall removal calculations delivered within 48 hours and Building Control approved them without any questions. Very professional."

Sarah K, Hammersmith

London Boroughs We Cover

We provide structural calculations London-wide across all 32 boroughs.

●Ealing ●Hounslow ●Hillingdon ●Hammersmith & Fulham ●Kensington & Chelsea ●Richmond ●Barnet ●Haringey ●Enfield ●Camden ●Islington ●Hackney ●Wandsworth ●Lambeth ●Merton ●Croydon ●Greenwich ●Lewisham ●Southwark ●Tower Hamlets ●Newham ●Bromley ●All London postcodes

FAQs: Structural Engineer London

Straight answers for London homeowners, landlords and builders.

How much does a structural engineer cost in London?

Structural engineer London costs run from £245 to £1,500 for residential work. Load bearing wall removal and RSJ beams start from £245. Structural alterations are £300 to £900. Loft conversion structural calculations start from £550. Extension structural design is £450 to £750. Structural inspections are £350 to £650. All fees are fixed and confirmed before work begins. Full guide: structural engineer costs UK.

What is load bearing wall removal in London?

Load bearing wall removal London means removing a structural wall and installing a steel beam (RSJ) to carry the loads above. London Building Control requires full structural calculations before approving this work. We calculate the correct beam size, padstone design and bearing details, and produce a Building Control-ready pack. Load bearing wall removal London starts from £245 and is usually delivered in 24 to 72 hours. Full wall removal guide.

What structural alterations do you handle in London?

Structural alterations London projects include: load bearing wall removals, chimney breast removals, new openings in walls, floor alterations and any work that changes how a building carries load. London Building Control requires a structural engineer's calculation pack for all of these. Structural alterations London calculations start from £300. We cover structural alterations west London, north London, south London and east London at the same fee.

Do you cover West London?

Yes. As a structural engineer west London practice based in Uxbridge, we regularly work across Ealing, Hounslow, Hammersmith, Kensington, Hillingdon, Chiswick, Acton, Hayes and all W, UB and TW postcodes. West London is our core area — same-day quotes and 24-hour turnarounds for most west London projects.

Do you work with London Building Control?

Yes. We produce calculation packs in the format all 32 London borough Building Controls expect. We also work with private approved inspectors across London. If Building Control raises queries, we respond directly at no extra charge.

How fast can you deliver structural calculations in London?

RSJ beams and wall removal calculations are ready in 24 to 72 hours. Loft conversions and extensions take 5 to 7 working days. Turnaround is confirmed in writing with your fixed fee quote.

Do you cover all London boroughs?

Yes. We cover all 32 London boroughs. Based in Uxbridge we are particularly strong across west and north west London — Ealing, Hounslow, Hammersmith, Harrow, Hillingdon and Barnet — but we regularly work across south, east and north London too. Most projects are handled remotely from drawings and photos.

How do I choose a structural engineer in London?

Look for a chartered professional with Professional Indemnity Insurance and specific experience with London housing stock — Victorian terraces, mansion blocks and post-war construction are all different structurally. A reputable structural engineer in London provides fixed-fee quotes and Building Control-ready drawings. Check they respond to inspector queries as part of the service, as London boroughs are known for thorough review processes.

Get a Quote from a Structural Engineer London

Fill in the form below. Fixed fees, 24 to 72 hour turnaround, Building Control-ready calculations every time.

We aim to respond to all London enquiries within one working day.

Phone
07359 267907
Email
info@structuralengineercalcs.com
Based
Uxbridge, West London, UB8 3DE
Response Time
Within one working day
Service Area
All 32 London boroughs and Greater London. Strongest coverage in west and north west London — W, UB, TW, HA and NW postcodes.
Most London projects are designed from drawings and photos. If a site visit is needed — for example to assess construction type in an unusual property — we explain this and add it to the fixed quote upfront.
Get Started with a Structural Engineer London Today

Fixed fees, fast turnaround and Building Control-ready calculations every time. Call us on 07359 267907 or fill in the quote form above — same working day reply.

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SECalcs Structural Engineers — based in Uxbridge, west London. Serving all London boroughs and Greater London.

   
         
   

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  • Head Office: Corwell Lane, Uxbridge, England, UB8 3DE.
  • 07359 267907
  • info@structuralengineercalcs.com
  • Company No: 12653163
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