The triggers that require a commercial EPC, how SBEM modelling works, what MEES means for business landlords, and the exemptions that genuinely apply.
A commercial building needs an Energy Performance Certificate whenever it is sold, let, or newly constructed, and whenever an existing certificate has passed its ten-year life. It also needs one to evidence MEES compliance on a continuing lease.
The triggers
- Sale of the building or a leasehold interest in it
- A new letting, or a lease renewal to a new tenant
- Construction of a new commercial building
- Substantial modification that changes the number of parts with separate heating or cooling
- An existing certificate more than ten years old
- Evidencing band E compliance on a continuing lease under MEES
SBEM, not RdSAP
Homes use RdSAP, a reduced-data method designed around housing archetypes. Commercial buildings use SBEM, which builds an explicit zone-by-zone model — activity type, floor area, construction, heating, cooling, ventilation, lighting and controls for each zone. It is a genuinely different piece of work, which is why commercial certificates are quoted per building rather than from a price list.
What speeds it up
Floor plans, above everything. A CAD or PDF drawing removes hours of measuring and drafting. After that: activity or use class per area, heating and cooling plant details, ventilation type, lighting specification and controls, and any refurbishment specifications for insulation and glazing.
MEES for commercial landlords
Band E has been the minimum for new commercial lettings since April 2018, and since April 2023 it applies to continuing leases as well. A landlord holding sub-E commercial space needs either compliant works or a properly registered exemption. Enforcement sits with the local authority, and penalties for commercial property are calculated on rateable value — which makes them considerably larger than the residential equivalent.
Genuine exclusions
Some buildings do not require an EPC at all: places of worship, temporary buildings with a planned use of two years or less, certain industrial sites, workshops and non-residential agricultural buildings with low energy demand, and standalone buildings under 50m². These are narrower than they sound — a low-energy-demand industrial building is a specific test, not a description.
Get a quote
See our Commercial EPC service, our MEES consultancy for portfolio compliance, or send us the building details.
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