Before the next standard arrives there is one already in force. Under the Minimum Energy Efficiency Standards the current minimum for non-domestic private rented property in England and Wales is EPC band E, and it applies to letting rather than to occupying.
MEES restricts letting a commercial property that falls below the minimum rating. The important nuance is that it attaches to the act of letting and to continuing to let, which is why it tends to surface at a lease event rather than arriving as a letter one morning.
That makes it a transactional problem as much as a compliance one. A unit below the minimum is a unit you may not be able to let, which is a more immediate commercial consequence than any penalty.
The pattern across all four is the same: the rating matters when something happens to the building, and the cost of fixing it is lowest at exactly those moments, because the unit is usually empty or the negotiation is already open.
Breaching the standard carries up to £50,000 under three months in breach, and up to £150,000 at three months or more, enforced by local authorities. Note that there is no single maximum, which is the detail almost everyone gets wrong: the cap depends on how long the breach has run, and in each case the penalty is whichever is greater of a fixed sum or a percentage of the rateable value. A page quoting one flat figure is quoting the longer of the two.
There is also a publication penalty: the enforcement authority may publish details of the breach on a public part of the register, which for some landlords is the part that stings. For the actual exposure on a specific building, ask a solicitor — the figures above are the structure, not an assessment of your property.
Where a standard cannot reasonably be met there is provision to register an exemption on the PRS Exemptions Register. Exemptions are not a way around the regime: they are specific, evidenced, time-limited and registered, and an unregistered exemption is not an exemption.
The two situations landlords most often hope will qualify are where the work would not pay back within a defined period and where a third party withholds consent. Both have conditions attached, both need evidence, and both are worth getting professional advice on rather than assuming.
Because a non-domestic EPC is an asset rating of the building and its services, not of your metered use, the cheapest way to move a building off the bottom of the scale is usually to change a fixed service rather than the fabric — and lighting is the cheapest fixed service to change. A building sitting one band below the minimum is frequently a lighting job, which is a much better position to be in than it first appears.
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