Add more space and boost your property’s value with bespoke house extensions in London, delivered by experienced specialists offering tailored build solutions and expert project management.

Structural engineering in London for calculations, beam design, and load bearing wall removal.

Structural Engineering London, Calculations and Design Support

Executing major home modifications requires verified structural calculations, safe load distribution strategies, and precise steel beam design. London House Extension provides specialized structural engineering in London, assisting homeowners with structural calculations, RSJ beam sizing, and technical design packs for extensions, loft conversions, and internal wall knock-throughs. By ensuring load-bearing walls and roof structures are safely engineered, our experienced structural team creates clear, buildable solutions that protect your property and ensure fast Building Control sign-off.


If you are searching for a qualified structural engineer near me, your primary goal is determining exact load paths, beam requirements, and foundation specs for your London renovation. We analyze structural loads across Victorian terraces, Georgian townhouses, 1930s semi-detached properties, and period apartments, engineering practical steelwork and bearing details tailored to your home's unique layout. Resolving structural challenges during early technical design prevents build delays and ensures trades can execute site work safely.


What Our Structural Support Can Include

  • On-site structural reviews to assess existing load paths, wall alignments, and joist directions
  • Safe load-bearing wall removal design and temporary propping guidance for open-plan layouts
  • Precision RSJ steel beam and lintel sizing supported by detailed structural calculation packs
  • Custom steel column and box frame designs for wide rear extensions and bi-fold door openings
  • Comprehensive structural design packages for single, double-storey, and side-return extensions
  • Loft conversion structural engineering including floor joist strengthening and ridge beam specifications
  • Padstone sizing, bearing calculations, and connection details ensuring safe weight distribution
  • Sub-structure foundation design and depth assessments for extension footings near existing trees
  • Technical documentation tailored for Building Control approval and private inspector reviews
  • Clear structural drawing packages with annotated trade notes enabling accurate contractor execution
  • On-site structural design updates and calculation adjustments if unexpected site conditions arise
  • Comprehensive structural reports reducing risk, preventing delays, and supporting hassle-free sign-off

Structural engineering in Kensington London showing steel beam calculations and load bearing support.
Structural engineering in Camden London demonstrating foundation designs and RSJ calculations.
Our structural engineering specialists produce precise calculation packs and steel beam designs that guarantee structural safety and smooth Building Control approval across London.

Our Structural Engineering Support Process

01. Structural Review & Site Assessment

We assess your project scope, analyze existing load paths, and perform a structural inspection to determine required steel support and foundation requirements.

02. Calculations & Steelwork Design

Our engineers calculate exact beam sizes, padstone bearings, and connection details, producing a comprehensive structural pack ready for builder execution.

03. Building Control & Site Support

We submit calculation packs for Building Control review, answer inspector queries, and provide ongoing technical guidance throughout construction.


Frequently Asked Questions

A wall is likely load-bearing if it supports floor joists above, runs perpendicular to floor timbers, or aligns with structural walls on upper storeys. However, older London homes often feature historic alterations that make visual inspection unreliable. A professional structural engineering assessment confirms exact load paths and specifies the correct RSJ steel beam support required before removing any wall.

A structural calculations pack provides comprehensive engineering data, including design load assumptions, steel beam (RSJ) sizing, deflection limits, padstone bearing dimensions, and connection details. This technical documentation proves structural safety to local authority Building Control officers and enables main contractors to price and install steelwork accurately.

Yes. Creating wide open-plan kitchen diners or installing large rear bi-fold doors requires specialized structural engineering to calculate heavy steel beam spans, deflection limits, and supporting steel columns or box frames. We design practical structural solutions that maximize open space while maintaining full structural stability.

Yes. House extensions require structural calculations for roof loadings, steel beam supports, and foundation depths. Loft conversions require engineering for floor joist strengthening, dormer steelwork, and roof timber modifications. Our structural design packages ensure your extension or loft build meets all UK Building Regulations.

Yes. We provide complete structural engineering calculations, steel beam design, and site support across all 32 Greater London boroughs. Share your postcode and project scope to arrange an initial structural consultation.

Please contact us by phone to arrange a free consultation.

Call us today

0207 4772 883