SAP/SBEM Calculations (Part L)
Provide the required energy performance assessments for residential and non-domestic buildings to achieve Building Control compliance.

SAP/SBEM Calculations (Part L)
Provide the required energy performance assessments for residential and non-domestic buildings to achieve Building Control compliance.
What is it?
SAP (residential) and SBEM (commercial) calculations assess the energy performance of your development in line with Part L. They are required at both design and as-built stages for Building Control sign-off.
Why It Matters?
Non-compliance delays completion, increases costs, and risks failing energy targets.
What standards do we adhere to?
Approved Document L, BRE methodology.
Our Process
Receive plans/specifications
Run SAP/SBEM modelling
Recommend efficiency improvements (if needed)
Issue compliance report and EPC.
Compliance Bundles
Tailored packages to simplify your safety responsibilities and save you time.
As Designed Bundle
Ideal for planning and design stage
- SAP/SBEM Calculations (Design Stage)
- Overheating Assessment (Simplified or TM59)
- Water Efficiency Calculations
- Bespoke PSI Values (where required)
Book an As Designed bundle and get priority scheduling for your As Built stage testing.
As Built Bundle
Ideal for completion and sign-off
- SAP/SBEM Calculations (As Built)
- Air Pressure Testing
- Acoustic Testing
- Ventilation Flow Rate Testing
Book an As Designed + As Built package together and save 10% on total compliance costs.

Frequently Asked Questions
How quickly can you deliver results?
Many reports and test results can be turned around within 48 hours.
Can you work alongside my design team?
Yes — we regularly collaborate with architects, MEP consultants, and contractors to ensure smooth compliance.
Do you travel nationwide?
Yes — we operate across the UK.
Can I bundle services?
Yes — bundling services saves both time and money, and we’ll coordinate testing for maximum efficiency.