House Extension (Structural)
Complete structural engineering for house extensions—from single-storey to double-storey and wrap-around extensions—calculations, beams, and foundations.
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Planning a house extension requires expert structural engineering to ensure your project is safe, compliant, and built to last. DW Design & Structure LTD provides comprehensive structural calculations, beam designs, and foundation specifications for all types of house extensions across the UK.
Whether you're adding a single-storey rear extension, double-storey extension, side extension, or wrap-around extension, our team of chartered structural engineers delivers the documentation you need for Building Regulations approval.
Popular for kitchens and living spaces, single-storey extensions require careful foundation design, wall specifications, and often steel beam calculations for open-plan layouts. We provide complete structural documentation.
Double-storey extensions add significant value but require more complex structural engineering. We design foundations, floor joists, and wall systems that work with your existing structure.
Side extensions maximize use of narrow plots. We address party wall issues, foundation design for restricted access, and structural connections to the existing property.
Combining rear and side extensions, wrap-arounds require comprehensive structural engineering including corner connections, complex load paths, and integrated foundation systems.
Dormer loft conversions require structural calculations for the dormer walls, floor strengthening, and roof modifications. We provide full structural documentation for Building Regulations.
Yes, you will need a structural engineer for virtually all house extensions. Building Regulations require structural calculations for any load-bearing walls, foundations, beams, or structural alterations. DW Design & Structure LTD provides complete structural engineering for all extension types.
Structural engineering costs for house extensions typically range from £800-£3,000 depending on the extension size and complexity. DW Design & Structure LTD offers free consultations and transparent pricing with no hidden costs.
Most house extensions require foundations, beam calculations (often steel or timber), wall reinforcement, floor joist specifications, and roof connection details. We provide all structural calculations required for Building Regulations approval.
Standard structural calculations for house extensions take 5-10 working days. DW Design & Structure LTD offers expedited services for urgent projects if required.
Yes, we provide complete structural drawings and calculations that are accepted by all UK local authority building control departments. Our documentation meets full Building Regulations requirements.
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