
SAP EXTENSION CALCULATIONS IN THE UK
Need SAP calculations for your home extension? Expert Energy Consultancy Ltd in Sheffield provides expert assessments to ensure full Part L compliance. From glazing area checks to Building Control-ready reports, we make your extension energy-efficient and regulation-ready quickly, accurately, and stress-free.
Get in touch with our team for expert advice.
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Planning a home extension? Expert Energy Consultancy Ltd provides specialist extension calculations to ensure your new space complies with Part L Building Regulations. Whether installing large glazed doors or using advanced materials, our accurate assessments help you meet energy efficiency requirements while building smart and sustainably. We offer tailored guidance on compensatory upgrades and supply all documents required for Building Control submission. Contact us today to discuss your project and get a free review of your plans.

WHAT IS A SAP CALCULATION FOR EXTENSIONS?
A SAP (Standard Assessment Procedure) calculation for an extension measures how the new space affects the overall energy efficiency of your home. It's often needed when the glazing exceeds 25% of the floor area, the space is thermally separated, or you use modern materials. These calculations ensure the extension won’t lead to excessive heat loss and that energy-saving solutions are in place to offset any increased heating demand. With transparent reporting and expert guidance, we help you easily achieve compliance.

OUR EXTENSION SAP SERVICES
Our team simplifies complex rules and delivers clear, practical advice, whether you're managing your build or working with an architect. You’ll get expert support from plan review to final sign-off. We offer a full SAP calculation service for extensions, including:
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Glazing area assessment and reduction strategies
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SAP modelling using approved software
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Carbon emissions comparisons
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Advice on insulation upgrades or renewables
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Final documents ready for Building Control submission