An Energy Performance Certificate rates a home's energy efficiency from A at the top to G at the bottom. Every property you let needs a valid one, and the rules on what rating you are allowed to let at are tightening. This is the area of landlord compliance with the biggest change on the horizon, so it is worth understanding both where the rules are now and where they are heading.
The rules today
Two duties apply right now. First, you must have a valid EPC and give the tenant a copy before they move in. An EPC lasts ten years from the date it is issued. Second, under the Minimum Energy Efficiency Standard, you cannot grant or continue a tenancy on a property rated F or G. The current minimum is an E.
If your property is rated F or G, you have to either improve it to at least an E or register a valid exemption before you let it. Letting a sub-standard property without an exemption can bring a financial penalty from the local authority.
The move to a C rating
The bigger change is the planned rise in the minimum from E to C. Under the government's proposals, privately rented homes will need to meet EPC C, with the requirement phased in and reaching all tenancies by 1 October 2030.
The timeline has moved before, so treat the specific dates as the current plan rather than a fixed certainty, and check the government guidance before making large spending decisions. But the direction is settled, and 2030 is close enough that landlords with lower-rated properties should be planning now rather than waiting for the deadline. Improvements such as loft and cavity wall insulation, better heating controls, and draught-proofing take time to arrange and to pay for, and the queue for tradespeople will get longer as the deadline approaches.
The cost cap
The move to C comes with a cost cap, proposed at £10,000 per property, or 10 per cent of the property's value for lower-value homes, whichever is lower. Once you have spent up to the cap on qualifying improvements and the property still does not reach C, you can register an exemption. Spending on energy improvements from October 2025 onwards is expected to count towards this cap, so keep every invoice.
The cap limits your exposure, but it does not remove the work. If £10,000 of insulation and heating upgrades gets a property from an E to a D, you can register an exemption, but you have still had to do the work and keep the records.
A new way of measuring
Alongside the higher standard, the government is reforming how EPCs are calculated, through a new Home Energy Model. The reformed certificates are expected to judge a property on more than one measure, looking separately at the building fabric, such as insulation and windows, and at the heating and smart systems. The practical effect is that reaching a C may depend not only on insulation but on the heating system, which pushes some properties towards heat pumps or renewable technology. This is still being finalised, so the exact metrics may shift, but the reform is coming.
Exemptions
Several exemptions exist, and they have to be registered on the government's PRS Exemptions Register to be valid. The main ones cover a property where all relevant improvements have been made and it still falls short, a case where you have spent up to the cost cap, situations where a necessary improvement would need third-party consent that has been refused, such as a freeholder or a tenant saying no, and cases where an improvement would damage the property or reduce its value. Exemptions are time-limited, commonly five years, and you have to re-check when they expire.
What to do now
Find the current EPC for each of your properties and note the rating and the expiry date. For anything rated D or below, get an assessment of what it would take to reach a C and what it would cost, so you can budget and spread the work over the next few years rather than facing it all at once. If you use a managing agent, ask them to track EPC expiry dates and flag properties that will need work before 2030.
The landlords who struggle with this will be the ones who wait until 2029, find their property needs several thousand pounds of work, and join a long queue of everyone else who waited. The ones who start now will spread the cost and the disruption. The certificate on your wall today tells you which group you are in.
This article is general information, not legal advice. The energy efficiency rules are subject to change and consultation. Check the current government guidance or take professional advice before acting.
