EPC rules for landlords: the standard that decides what you can let
An EPC rating is no longer a certificate in a drawer. It is a gate on whether a property can be let at all.
Since 2020, a landlord cannot grant a new tenancy, or continue an existing one, for a property with an EPC rating below E, subject to a cost cap on the improvements required and a system of registered exemptions. Domestic properties are rated A to G, and F and G are the prohibited bands.
The direction of travel is clearly towards a higher minimum, with government consultation on raising the threshold to C. Whatever the final date, the commercial point stands now: the future compliance cost of a property is a factor in what it is worth today, and the market is pricing it.
The cost cap and how it works
The regulations do not require unlimited spending. A landlord must spend up to a defined cap on energy efficiency improvements, and if the property still cannot reach the required band, an exemption can be registered on the PRS Exemptions Register.
The cap applies to the total spend on the property, not per measure, and there are rules about how it is calculated and evidenced. An exemption is time-limited and must be renewed, and it does not transfer automatically with the property — so a buyer relying on the seller's exemption may find it does not apply to them.
- Improvements are required up to a set cost cap; beyond that an exemption may be registered
- Exemptions must be registered on the national PRS Exemptions Register, with evidence
- Exemptions are time-limited and do not transfer automatically on sale
- Listed buildings and some other categories have separate treatment, but they are not automatically exempt
- An EPC must be obtained before marketing, and the rating must be disclosed to tenants
What actually moves a rating, and what does not
The measures that reliably improve an EPC are well established: loft insulation, cavity wall insulation where the construction allows it, modern glazing, a condensing boiler or a heat pump, and improved heating controls. Anecdotally popular measures such as draught-proofing and smart meters have little or no effect on the rating.
This matters because money is often spent on the wrong things. A landlord who installs new glazing at £8,000 may gain less than one who spends £1,500 on loft and cavity insulation, because the EPC model weights the building fabric heavily. Get a new EPC modelled before committing to a specification.
Why it changes the price you should pay
A property with an F rating and solid walls is not simply a property that needs a boiler. It may need external or internal wall insulation, which is expensive, disruptive and in some cases impossible without planning consent or listed building approval.
That uncertainty has a value, and it belongs in your offer. The same is true in reverse: a property already at a C rating with a modern boiler commands a premium from investors who do not want the project, and that premium is real and observable in the market.
Common questions
- Can I let a property with an EPC rating of F or G?
- Not on a new tenancy or an ongoing one, unless you have registered a valid exemption. You must have spent up to the cost cap on improvements and still be unable to reach E, or fall within one of the other exemption categories. Letting in breach can attract a financial penalty.
- Do listed buildings need an EPC?
- Listed buildings are not automatically exempt. An EPC is required unless the building is exempt on the grounds that compliance with energy efficiency measures would unacceptably alter its character. That is a specific exemption with conditions, not a blanket one, and it should be confirmed with the council rather than assumed.