Structural Engineering Services in London
Wimbledon Surveyors arranges chartered structural engineering across London — from reassurance on a worrying crack to full calculations and beam design for your extension. Whether you are buying, building or worried about movement, we match you with an engineer who provides clear, buildable, building-control-ready advice. Tell us what you need.
Structural Engineer Reports
A focused structural engineer’s report answers a lender’s, buyer’s or insurer’s specific concern about a defect, crack or alteration — with a clear verdict and remedy.
Calculations & Beam Design
For alterations we produce structural calculations and beam designs for removing load-bearing walls, ready for building control approval.
Extensions & Loft Conversions
Our engineers provide the structural design for extensions and loft conversions, sizing beams, foundations and connections for your project.
Movement & Subsidence
We investigate subsidence and movement and carry out structural crack assessments to establish cause and proportionate repair.
Get Structural Advice
From a single crack to a full extension design, we can help. Request a structural engineering quote today.
Structural Engineering Services in London & Essex
From removing a load-bearing wall to diagnosing subsidence, structural work is where mistakes are most expensive — and where the right professional input earliest saves the most. Our structural engineering team works alongside our chartered surveyors to provide design, calculations and investigation services for homeowners, buyers, landlords, architects and contractors across London and Essex. Whether you need beam calculations for Building Control, a structural inspection before you exchange contracts, or a full investigation of movement cracks, one practice covers it.
Design and Calculations for Home Alterations
Planning a knock-through, extension or loft conversion? We produce structural calculations and drawings that satisfy Building Control first time — steel beam sizing, padstone and foundation checks, and load-bearing wall removal design. Our extension and loft structural design service takes projects from concept to construction-ready details, coordinating with your architect and builder.
Investigation and Diagnosis
When a building shows signs of distress, we identify the cause before anyone spends money on the cure. Our structural crack assessments distinguish cosmetic movement from progressive failure; our subsidence investigations get to the root of ground movement — from clay shrinkage and tree roots to leaking drains — and set out the remedial options, including whether underpinning is genuinely necessary.
Reports for Purchases, Lenders and Insurers
Buying a property flagged by your lender or Level 3 building survey? Our structural engineer reports address specific defects — bowing walls, sagging floors, altered chimney breasts, cracked lintels — with clear conclusions on cause, severity and repair, in a format lenders and insurers accept.
Why Use a Surveyor-Led Structural Team
Because structure never exists in isolation. Damp, drainage, roof spread and historic alterations all interact with structural performance, and our combined team reads the whole building, not just the beam. You get one point of contact, coordinated advice, and — where a dispute or claim arises — seamless escalation to our expert witness surveyors whose evidence meets CPR Part 35.
Typical Projects and Timescales
Beam calculations for a single wall removal are usually delivered within a week; extension and loft design packages within two to three; investigation reports within five to ten working days of inspection. Fees are fixed and confirmed before instruction — tell us your project, deadline and Building Control route and we will schedule accordingly.
Frequently Asked Questions
Any time work affects the structure — removing or altering walls, cutting into joists or roofs, underpinning, or new openings — Building Control will expect calculations by a competent engineer. Builders install what the design specifies; the design itself needs an engineer, and relying on a builder’s assumptions is a common and costly mistake.
Simple beam calculations for a wall removal typically cost a few hundred pounds; full extension or loft design packages more, depending on scope. Investigation reports are priced by complexity. We quote fixed fees before you commit.
Yes — calculations and details in the format Building Control bodies and approved inspectors require, and we respond to any queries they raise until approval is confirmed.
Yes. We provide specific structural inspections and reports on defects identified by lenders or surveys, usually within days — fast enough to keep your purchase on track and give you negotiating evidence on repair costs.
Routinely. We design to your architect’s drawings, coordinate details with your contractor, and can attend site during the works to inspect critical stages such as steel installation and temporary support.