SBEM & DSM Calculations for Part L2a Compliance

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Stroma Built Environment provides Simplified Building Energy Model (SBEM) and Dynamic Simulation Model (DSM) Calculations for non-domestic buildings to ensure compliance with Part L2a of the Building Regulations.

Nationwide Delivery

Access to a nationwide network of Energy Assessors and Air Tightness Engineers.

Part L2a Compliance

Fast and efficient reporting for Part L2a Building Regulations compliance and a smooth handover process.

Modelling Software

Industry-leading 3D DSM and IES Virtual Environment software for accurate calculations and thermal modelling.

Design Stage SBEM & DSM Calculations

We’re helping clients achieve Part L compliance with design stage calculations, draft Energy Performance Certificates (EPCs), as-built calculations, and final EPCs for Building Control sign-off and handover.

SBEM Assessments - Design stage SBEM assessments before construction works begin. As-built SBEM calculations are then completed, along with final air tightness testing to issue final EPC.

DSM Calculations - DSM calculations and thermal modelling are performed to assess the environmental performance of buildings, including real-time data, historical weather figures, and accurate sun path analysis.



“We’re working with design teams from early concept stages on buildings with complex designs, including projects with atriums, uncommon heating and cooling systems, and unusual roof shapes. Our DSM calculations can also assist with planning applications and gaining BREEAM credits.”

Ben Talbutt, Senior Sustainability Consultant

3D Thermal Modelling Software

Using 3D modelling software, our SBEM and DSM calculations create a detailed thermal model of your proposed development to assess its environmental performance once it’s built. We calculate energy usage, CO2 emissions, as well as:

Building Geometry, Location and Orientation

Thermal Performance and Overheating (U-values, Air Tightness)

Daylight / Sunlight Analysis

Renewable Technology Feasibility

Building Services (HVAC Systems)



Our team of Energy Assessors are experienced in carrying out SBEM and DSM modelling across a variety of non-domestic buildings, including schools, healthcare buildings, offices and retail units, as well as other commercial buildings.

Compliance Pack Bundle

Stroma Built Environment offers complementary services for SBEM & DSM Calculations for Part L2a Compliance to reduce procurement costs, gain project efficiencies and achieve full compliance and sustainability targets for your project.

Recommended services
Air Tightness Consultancy
Acoustic Consultancy
Daylight and Sunlight Assessments
Drone Surveys
Measured Building Surveys
CWCT On Site Testing

Include SBEM & DSM with your Sustainability Strategy

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