SBEM Calculations

What is SBEM?

SBEM stands for: Simplified Building Energy Model.

SBEM (Simplified Building Energy Model) is a software tool that’s used to demonstrate compliance with Part L2 of the Building Regulations. SBEM calculates the monthly energy use and carbon dioxide emissions of a building based on the building geometry, construction, use, and HVAC and lighting equipment.
SBEM Calculations are a mandatory requirement for any heated, new build commercial building exceeding 50m2 in floor area.

Also some non-domestic extensions and conversion projects will require an SBEM Calculation. Large extensions are regarded as new buildings and as such must comply with the requirements of Approved Document L2A. This includes the requirement to submit SBEM calculations.

What do I need to provide to the SBEM assessor?

  • Floor plans, elevation and section drawings;
  • Construction specification;
  • Mechanical and electrical specification; and
  • Site layout and location plan.

When is an SBEM Calculation required?

Design Stage – Building Control require a Design Stage SBEM Calculation to be submitted with your Building Regulations Application. Without the SBEM Calculation, Building Control will not allow the project to start on site.

As-built Stage – Building Control require an As-built Stage SBEM Calculation and EPC when the building is completed. Without this info it is unlikely that the building will achieve Final Building Control approval.