Commercial MEES penalties are not theoretical. Trading Standards officers in several London boroughs have begun proactively auditing commercial landlords, and the fines for letting a non-compliant property can reach £150,000 per building.
This article sets out exactly how penalties are calculated, who enforces them, and what you can do now to make sure you are not caught out.
How commercial MEES penalties are calculated
The penalty structure is set out in the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015. It works on a sliding scale based on how long the breach has lasted.
For a breach of less than three months, the penalty is the greater of £5,000 or 10% of the property's rateable value, capped at £50,000. For a breach of three months or more, it rises to the greater of £10,000 or 20% of rateable value, capped at £150,000. There is also a separate publication penalty: the landlord's name, the property address and the breach details are published on the public PRS Exemptions Register for at least 12 months.
These penalties apply per property, not per portfolio. A landlord with five non-compliant buildings in the same borough could face five separate enforcement actions.
Who enforces commercial MEES
Enforcement sits with local weights and measures authorities, which in practice means local authority Trading Standards teams. They have the power to serve compliance notices requiring landlords to provide EPC data, tenancy information and evidence of exemption registration going back 12 months.
Enforcement activity has historically been patchy, but it is increasing. Several London boroughs with large commercial property portfolios have begun targeted audits, particularly around lease renewal and re-letting activity picked up through Land Registry and Landmark data. Westminster, Camden, the City of London and Southwark have all signalled more active enforcement programmes.
The reputational cost
Beyond the financial penalty, there is a reputational dimension. Publication on the PRS Exemptions Register is visible to tenants, investors, lenders and rating agencies. For institutional landlords with ESG reporting obligations, a MEES breach can affect fund-level sustainability scores and trigger covenant queries from lenders who require minimum EPC ratings as part of green loan conditions.
This is increasingly relevant in London. Occupiers are asking about EPC ratings as part of their own Scope 3 emissions reporting, and agents are filtering out non-compliant stock before it reaches the shortlist.
How to avoid penalties
The simplest route: get a current Commercial EPC on every property you let. If the rating is E or above, you are compliant under the current rules. If any property is rated F or G, you have two options: carry out improvements to lift it to E or above, or register a valid exemption on the PRS Exemptions Register.
For the proposed EPC C threshold (expected 2027/28), the same logic applies at a higher bar. Get the EPC, check the rating, and if you are below C, start planning now. The Recommendation Report that comes with every EPC lists the improvements that would lift the rating and their estimated cost.
If improvements are not cost-effective within the seven-year payback rule, you can register the exemption now. You will need three contractor quotes and an assessor's calculation to support it. The exemption lasts five years.
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