SAP CALCULATIONS & TRANSITIONAL SUPPORT

SAP Calculations and Transitional Support

EnergyRegs UK provides accurate SAP calculations and clear transitional support for residential projects across the UK.

Whether you are working on a new dwelling, extension, conversion or project already progressing through Building Control, we help you understand the requirements, prepare the right reports and keep your compliance route clear as the industry moves towards HEM.
WHAT ARE SAP CALCULATIONS?

Residential Energy Compliance for Current UK Projects

SAP calculations are used to assess the energy performance of residential dwellings and demonstrate compliance with Part L of the Building Regulations.

 

They are commonly required for new build homes, certain extensions, conversions and change-of-use projects. The assessment considers the building fabric, heating system, hot water, ventilation, lighting, renewables and other key details that influence energy efficiency and carbon performance.

SAP remains an essential compliance route for many residential projects, especially while the industry transitions towards the Home Energy Model.

New Build SAP Calculations pricing chart

Property Size Price From Quote
1 Bedroom £150 Request Quote
2 Bedrooms £200 Request Quote
3 Bedrooms £250 Request Quote
4+ Bedrooms Contact us Get Custom Quote

Discounts are available for multiple properties or larger developments. All prices are subject to review of drawings, specifications and project complexity before confirmation.

WHY SAP STILL MATTERS

Essential Support During the SAP to HEM Transition

The UK energy assessment framework is changing, but SAP is still highly relevant for projects currently moving through design, planning, Building Control or completion.

 

With SAP 10.3 currently available as the approved methodology, many residential projects still need clear SAP support before the full HEM transition takes effect. Our role is to help you understand which route applies, what information is needed and how to avoid compliance delays.

Current Methodology Support

SAP 10.3 support for projects that still require the current approved residential assessment route.

Transitional Project Guidance

Practical advice for schemes affected by changing standards, submission timing or Building Control requirements.

Design Stage Clarity

Early feedback to help identify issues before they become costly or difficult to resolve.

Completion Support

Guidance through final documentation, as-built information and EPC-related requirements.

WHAT’S INCLUDED

Clear SAP Support from Design Stage to Completion

SAP Calculations FAQs

What are SAP calculations?

SAP calculations assess the energy performance of a residential dwelling and are used to demonstrate compliance with Part L Building Regulations and support EPC generation.

Do I need SAP calculations for a new build home?

In most cases, yes. New residential dwellings usually require SAP calculations as part of the Building Control and energy compliance process.

Are SAP calculations still needed in 2026 and 2027?

Yes, many projects will still require SAP support during the transition period. SAP 10.3 remains relevant for current and transitional projects while HEM is introduced.

Do extensions need SAP calculations?

Some extensions require SAP calculations, particularly where glazing levels, fabric performance or Building Control requirements need additional assessment.

What is the difference between design stage and as-built SAP?

Design stage SAP is based on the proposed drawings and specifications. As-built SAP checks the final installed details once the project is complete.

Can you help if my SAP calculation does not pass?

Yes. We can review the results and provide practical recommendations to improve the specification and help the project meet the required standard.

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