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.

COMMERCIAL FIT-OUT COMPLIANCE

SBEM calculations for fit-outs
coordinated with the installed design.

Part L modelling and EPC support for offices, shops, leisure spaces and other non-domestic fit-out projects.

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Separate the shell from the fit-out

We establish what was assessed at shell stage and what changes with the tenant or first-occupier fit-out. Internal layout, activity zones, lighting, ventilation, heating, cooling and controls are then reflected in the proposed model.

Test the systems that drive the result

Commercial compliance is often influenced more by lighting and HVAC than by fabric alone. We review efficiencies, controls, ventilation rates, zoning and renewable contribution and identify practical changes where the model falls short.

Produce the completion evidence

The final model is aligned with installed equipment and commissioning information before the BRUKL report and EPC are produced. Missing evidence is identified early so certification does not delay handover.

RELEVANT PROJECT EXPERIENCE

Similar buildings.
Practical outcomes.

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

First-occupier retail fit-out

Internal fit-out assessed against the shell model

The handed-over shell remained unchanged externally while partitions, lighting and mechanical services were added for the first occupier.

The fit-out SBEM and EPC evidence were coordinated without reopening the base-build scope.

Office refurbishment

Services-led improvement to a commercial office

The existing office model was reviewed alongside the proposed lighting, controls and mechanical upgrades to identify the measures with the strongest rating impact.

The modelled EPC improved from D93 to A23.

COMMON QUESTIONS

Clear answers.
No guesswork.

01Does an internal fit-out need a new SBEM?+

It may where the work creates or alters a conditioned building, changes fixed services or forms part of a first-occupier completion. Building Control should confirm the formal requirement.

02Can you use the shell model?+

Usually, where the original files and reports are available. We review them and confirm what can be retained.

03What services information is required?+

Typically lighting power and controls, heating and cooling efficiencies, ventilation data, hot-water systems, controls and evidence of renewable installations.

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