Frequently asked questions.

How much does a SAP Calculation cost?

The cost of a SAP Calculation varies depending on the project type, size, and complexity. Costs range from as low as £100.00 for a simple individual unit on a multiple property development to over £500.00 for a large bespoke dwelling with innovative construction methods.

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How long does it take to produce a SAP Calculation?

A SAP Calculation typically takes 1 to 3 working days to produce, depending on project complexity and document readiness. It may take longer if the required documents are not available, as a SAP assessor needs to provide evidence to support their data inputs. Additionally, if the initial design or completed dwelling doesn’t meet Part L requirements, the assessor will offer guidance on achieving compliance, which can further extend the process.

When should I get SAP Calculations?

You need SAP Calculations at two stages:

• Design Stage – before construction begins, to ensure the design will comply.

• As‑Built Stage – once the home is completed, based on the final installed specifications.

Building Control require SAP Calculations at both stages.