What are SAP calculations and when are they required?

SAP calculations assess the predicted energy performance of a dwelling. They are commonly required for new-build homes, conversions and certain extensions to demonstrate Part L compliance.

What is needed for an on-construction EPC?

The final SAP or SBEM model must reflect the completed building, supported by confirmed construction specifications, test results and commissioning evidence.

What does an Energy Statement include?

An Energy Statement normally describes planning policy, the proposed energy strategy, demand-reduction measures, low-carbon systems, renewable energy and the resulting carbon improvement.

LONDON PLANNING ENERGY STRATEGY

London Plan Energy Statements
supported by the calculations.

Project-specific energy strategies addressing the London energy hierarchy, borough policy and quantified carbon performance.

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Establish the policy requirements

We review the scheme, borough requirements, development scale and planning comments to define the required evidence. The report is structured around the actual proposal and the policy position applying to it.

Quantify Be Lean, Clean and Green

SAP or SBEM outputs are used to test demand reduction, efficient services, low-carbon heat and renewable energy. Results are presented clearly at each stage of the hierarchy, with limitations and design dependencies explained.

Coordinate the submission

The Energy Statement is aligned with architectural, mechanical and renewable proposals and can be updated as the design develops or in response to proportionate planning comments.

RELEVANT PROJECT EXPERIENCE

Similar buildings.
Practical outcomes.

Selected anonymised examples showing how the assessment supported design, compliance or completion.

London residential redevelopment

Energy strategy coordinated with a planning submission

The assessment brought together SAP outputs, the energy hierarchy, heat-network considerations and renewable-energy proposals for a constrained residential scheme.

The planning team received one coordinated narrative supported by quantified results.

Large leisure development

Be Lean limitations explained for mixed heated and unheated spaces

The relationship between a heated clubhouse and predominantly unheated court enclosure was examined rather than treating the whole development as a conventional conditioned building.

The design team received a clearer basis for fabric options and planning justification.

COMMON QUESTIONS

Clear answers.
No guesswork.

01Does every London project need the same report?+

No. Requirements vary with the borough, project scale, use and planning policy. We confirm the necessary scope before starting.

02Can the Energy Statement be prepared before the SAP or SBEM?+

A strategy can begin earlier, but quantified carbon claims should be supported by suitable calculation outputs.

03Can you respond to planning comments?+

Yes. We can review energy-related comments and update the calculations or report where the design or policy evidence changes.

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