Structural Calculations in Weymouth — Engineer-Certified from £350
Engineer-certified structural calculations for your extension or wall removal. Covers beam sizing, foundation design, and Building Regulations compliance.
What's included
- Engineer-certified beam sizing
- Foundation design recommendations
- Load path analysis
- Building Regulations compliance notes
- Digital delivery within 5 working days
Structural Calculations for Weymouth Extensions
Every extension and load-bearing wall removal needs structural calculations signed off by a qualified engineer. In Weymouth, where rear extensions on terraced seafront properties, garage conversions in suburban estates, and loft conversions to capture sea views, getting the steelwork right is the difference between a smooth build and expensive on-site changes.
What structural calculations cover
Beam sizing for load-bearing wall removals, padstone specifications, foundation design, lintel calculations for new openings, and roof structure modifications. Everything your builder and building control inspector need to approve the structural work.
Common structural work in Weymouth
Weymouth has Georgian seafront terraces along the Esplanade, Victorian properties in Westham, post-war housing in Littlemoor, and modern developments in Preston and Chickerell. Common projects include rear extensions on terraced seafront properties, garage conversions in suburban estates, and loft conversions to capture sea views. Each property type has different structural characteristics — a Victorian terrace with solid brick walls behaves differently to a 1970s cavity-wall detached house.
Building control compliance
Dorset Council building control will need to see approved structural calculations before work begins on any load-bearing element. Our engineer-certified calculations satisfy this requirement and are accepted by all approved inspectors.
Typical properties in Weymouth

Royal Terrace, Weymouth — Regency terrace dating from 1816 on the seafront esplanade
Fig. 2

Frederick Place, Weymouth — Georgian terrace originally laid out on the gardens of Gloucester Lodge
Fig. 3
Structural Calcs questions in Weymouth
Structural Calcs in other areas
Other services in Weymouth
Structural Wall Removal
from £6,500
Structural wall removal for Poole homeowners: survey, structural calculations, Building Control, RSJ installation and making good handled as one route.
RSJ Installation
from £6,500
RSJ and steel beam installation for Poole structural openings, kitchen knock-throughs and wall removals with engineer and Building Control support.
Kitchen Knock-Through
from £9,000
Kitchen knock-throughs and open-plan kitchen structural alterations in Poole, including wall removal, RSJs, Building Control and making good.
Single-Storey Extension Builder
priced after fit check
Single-storey extension builder in Poole for rear extensions, kitchen extensions and controlled watertight shell projects with design, approvals and build route joined up.
3D Laser Survey
£650
A 1.5-hour on-site visit with a 3D laser scanner to capture millimetre-accurate measurements of your property. The foundation for precise structural calculations and planning drawings.
Planning Application
£2,200
Full householder planning application preparation and submission. We handle the drawings, design and access statement, and council liaison from start to finish.
Building Regulations Drawings
£399
Technical construction detail drawings that satisfy Building Regulations. Covers insulation, drainage, structural details, and everything your builder and building control need.
Builder Introduction
£149
We match you with 2–3 vetted local builders who specialise in your type of project. Includes a professional brief so every builder quotes on the same scope.
Certificate of Lawfulness
£1,500
A legal document confirming your extension falls within Permitted Development rights. Protects you at resale — mortgage lenders and solicitors expect it.
Build Coach
from £49/mo
Ongoing expert support throughout your build. From fortnightly AI check-ins to weekly human coaching calls, builder mediation, and trade price verification.
Floor Plans
from £250
Measured floor plans for Poole renovation, extension and structural alteration projects before pricing, engineering, planning or Building Control.
Ready to get started in Weymouth?
Structural Calculations from £350. Fixed price, no obligation.
Every plan drawn by qualified drafters in Poole, Dorset
Serving homeowners across Poole, Bournemouth, Christchurch, Wimborne, Wareham, and the wider Dorset area.
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