Commercial Energy Performance Certificates differ from residential EPCs in several important ways. A commercial EPC uses the Simplified Building Energy Model (SBEM) rather than SAP, and must be produced by a qualified Non-Domestic Energy Assessor. They’re required whenever a commercial property is constructed, sold, or let, and are valid for ten years.
The Minimum Energy Efficiency Standards (MEES) for commercial properties follow a slightly different trajectory to residential. Since April 2023, landlords of commercial properties cannot continue to let a property with an EPC below E — this applies to existing leases as well as new ones. Penalties are more severe for commercial properties: up to £150,000 for non-compliance, based on the rateable value of the property.
Commercial EPC assessments consider the building fabric, heating and cooling systems, lighting, hot water systems, and any renewable energy generation. Unlike residential EPCs, factors like floor area, building orientation, and the type of commercial activity can significantly affect the rating. Display Energy Certificates (DECs) are a separate requirement for public buildings over 250m².
Improving a commercial EPC rating often involves upgrading lighting to LED, improving heating controls and building management systems, adding insulation, replacing single glazing, and installing renewable energy. For older commercial buildings, achieving an E rating can require substantial investment, making it essential to plan ahead of compliance deadlines.
Custodia’s commercial property compliance features allow building owners and facilities managers to track commercial EPC ratings alongside other compliance requirements, providing a unified view of regulatory obligations across mixed commercial and residential portfolios.