SBEM Calculations Part L Compliance for Commercial Buildings, Nationwide

Greens Surveyors provides Level 3, 4 and 5 SBEM assessments for non-domestic new builds, extensions and changes of use across the UK. Fast, accurate and fully accredited.

SBEM Calculations from £149 REQUEST A QUOTE
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What Is An
SBEM Calculation?

SBEM (Simplified Building Energy Model) is the UK Government's methodology for assessing the energy performance of non-domestic (commercial) buildings. It is used to demonstrate compliance with Part L2a (new non-domestic buildings) and Part L2b (existing non-domestic buildings) of the Building Regulations 2010. The calculation models your building's heating, cooling, lighting, hot water and ventilation systems against a 'notional' benchmark building. Your design must achieve a Target CO₂ Emission Rate (TER) and Target Primary Energy Rate (TPER) that meets or beats the notional model.

SBEM assessments must be submitted at design stage and post-construction. Greens Surveyors handles both, minimising the risk of late-stage redesigns.

SBEM Assessment Levels
Which Do You Need?

STRATUM 01

Level 3

Simpler commercial buildings: small offices, retail units, warehouses without complex HVAC. Standard SBEM software.

Simple HVAC Mapping
DSM Lite Compatibility
STRATUM 02

Level 4

More complex buildings with air conditioning, mechanical ventilation or central heating zones. Offices, hotels, large retail. Most modern commercial developments.

Complex HVAC Dynamics
Advanced Zone Modeling
STRATUM 03

Level 5 (DSM)

Unconventional buildings — large atriums, curtain walling, complex renewable integrations. Requires Dynamic Simulation Modelling (DSM).

Dynamic Thermal Analysis
Solar Shading Simulation

SBEM Calculations Pricing

Part L2a
Existing Building Extension/Alteration
From £199
GET A QUOTE

Start Your
SBEM Assessment.

Join thousands of developers and architects who trust Greens Surveyors for precision environmental modelling.

Typical response time: < 2 hours during business hours