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Extension cost calculator

What structural work does your extension actually need? Pick your project and see what has to be designed, checked and submitted, then get a fixed fee against that exact scope.

People search for an extension cost calculator wanting one thing: to know what they are in for. The honest answer is that the structural fee follows the work, so this shows you what the work actually is. Pick your project and you will see what normally has to be designed, checked and submitted. Send us the details and you get a single fixed figure before you commit to anything.

What structural work does your project need?

Pick your project and we will show you what a structural engineer normally has to design for it. Then send us the details and we will put a single fixed fee against it.

Straightforward
Typically involves

    A guide to scope, not a quote. We confirm a fixed fee in writing before any work begins.

    Get a fixed fee for this scope
    Not sure what you need?Send us your drawings, or just a photograph of the wall. We will tell you what is required and what it costs before you commit to anything.
    Get a quote020 3432 4186
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    From the glossary
    EurocodesStructural CalculationsLoad-Bearing WallFoundation
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    Start a project

    Tell us what you are building.

    £5m PI insuredEurocode basedChecked and signed

    Send the drawings or describe the project. We confirm scope, deliverables and a realistic timescale.

    Start a project
    or call 020 3432 4186