Minimum Energy Efficiency Standards (MEES)
The Minimum Energy Efficiency Standards (MEES) are the legal rules that set the lowest acceptable energy performance rating a private landlord in England and Wales can let a property at. They are established by the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 and enforced by local housing authorities. The Regulations apply to domestic private rented properties let on an assured tenancy, a regulated tenancy, or a domestic agricultural tenancy, where the property is also legally required to have an EPC. Energy performance is measured by reference to the property's EPC band, rated from A (most efficient) to G (least efficient).
MEES sits within the broader framework of energy efficiency rules that apply to private landlords alongside safety, habitability, and licensing obligations.
The current position: EPC E minimum
Since 1 April 2020, it has been unlawful for a landlord covered by the Regulations to let or continue to let a property with an EPC rating of F or G, unless a valid exemption is registered on the government's PRS Exemptions Register. This applies to all relevant domestic tenancies regardless of whether there has been a change in tenancy, a landlord cannot continue an existing F or G rated letting simply because the tenancy predates the Regulations.
Where a property is at F or G, the landlord must carry out qualifying energy efficiency improvements up to a cost cap of £3,500 (including VAT) to attempt to reach band E. If the property still cannot reach E after spending up to the cap, an exemption can be registered. The cost cap covers only measures recommended in the EPC report, or measures assessed by an independent surveyor to be suitable for the property. Third-party funding, grants or schemes, counts towards the cap first, reducing the amount the landlord must spend from their own funds.
Exemption grounds
Landlords who cannot reach EPC E within the cost cap, or who face other specific obstacles, can register an exemption on the PRS Exemptions Register. The six main exemption grounds are:
All improvements made. All relevant measures have been installed up to the £3,500 cap but the property still cannot reach E. Valid for five years.
High cost exemption. No single qualifying measure can be installed for £3,500 or less. Valid for five years.
Wall insulation exemption. A relevant wall insulation measure is not appropriate for the property due to its construction type or likely negative impacts. Valid for five years.
Third-party consent refused. The landlord has applied for consent from a tenant, superior landlord, freeholder, lender, or planning authority and it has been refused or granted with conditions that cannot reasonably be met. Valid for five years or until the current tenancy ends, whichever is sooner.
Devaluation exemption. An independent surveyor has confirmed that installing the recommended measure would reduce the property's market value by more than 5%. Valid for five years.
New landlord exemption. A landlord who has recently acquired an F or G rated property through purchase, inheritance, or repossession has a temporary exemption of six months to bring the property into compliance or register a longer-term exemption.
Exemptions are linked to the individual landlord, not the property. If the property changes hands, the new landlord must re-register any exemption that still applies. Members of the public can search the Exemptions Register to see which properties hold exemptions and what penalty notices have been issued.
Enforcement and penalties
Local housing authorities enforce the Regulations and can serve compliance notices where they believe a landlord has let in breach of the minimum E standard. If a breach is confirmed, the authority can impose a financial penalty of up to £5,000 per property per breach. A separate penalty of up to £5,000 applies for providing false or misleading information in connection with an exemption registration. Details of penalty notices are published on the PRS Exemptions Register.
The 2030 roadmap: EPC C
On 21 January 2026, the government confirmed through the Warm Homes Plan that all privately rented properties in England and Wales covered by MEES will be required to achieve a minimum EPC band C by 1 October 2030. This is a single compliance date applying to both new and existing tenancies, there is no earlier date for new lets. The cost cap under the 2030 regime will be £10,000 per property per ten-year period, with any qualifying expenditure incurred from 1 October 2025 counting towards that cap. Where a property cannot reach EPC C after £10,000 has been spent, an exemption can be registered, with a low-value property exemption applying where £10,000 would represent 10% or more of the property's market value.
The regulations giving statutory effect to the 2030 standard are expected to be laid as a statutory instrument in 2027. A new Home Energy Model (HEM) assessment methodology will replace the current SAP-based system for EPC assessments from 1 October 2029. Properties achieving EPC C under the current system before that date will be treated as compliant until the certificate expires.
For a full guide to the current MEES requirements, the 2030 EPC C deadline, how the cost cap and exemptions work in practice, and what improvements to prioritise, see the August MEES guide for landlords. Landlords who want to model the cost and rating impact of specific improvement measures can use the August EPC improvement calculator.
MEES in practice
August's compliance checklist flags properties where the EPC is approaching expiry or where the rating may place a landlord at risk under MEES, giving time to plan improvements before a tenancy change triggers the obligation.
For professional landlords, MEES is a planning issue as much as a compliance one. The 2030 deadline creates a five-year window in which retrofit costs, installer capacity, and grant funding availability will all need to be factored into portfolio planning. Landlords who improve properties now, particularly those currently at E or D, benefit from locking in compliance before HEM methodology changes the measurement framework and potentially before retrofit costs rise as the sector collectively competes for the same installers.
The measurement vehicle through which MEES compliance is assessed is the EPC, for a plain-English explanation of what an EPC covers, how to obtain one, and what it costs, see the August definition of the EPC.
Frequently asked questions
What is MEES and who does it apply to?
MEES (Minimum Energy Efficiency Standards) are regulations under the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 that set a minimum EPC band for privately rented domestic properties in England and Wales. They apply to properties let on an assured tenancy, regulated tenancy, or domestic agricultural tenancy, where the property is legally required to have an EPC.
What is the current minimum EPC rating under MEES?
EPC band E. Properties rated F or G cannot legally be let in England and Wales unless a valid exemption is registered. From 1 October 2030, the minimum will rise to EPC band C under the confirmed Warm Homes Plan.
What is the MEES cost cap?
Under the current E standard, landlords are required to spend up to £3,500 (including VAT) on qualifying energy efficiency improvements. If a property still cannot reach E after that expenditure, an exemption can be registered. Under the 2030 C standard, the cost cap will be £10,000 per property per ten-year period, with qualifying works from 1 October 2025 counting towards it.
What happens if a landlord breaches MEES?
The local housing authority can impose a financial penalty of up to £5,000 per property per breach. A further penalty of up to £5,000 applies for providing false or misleading exemption information. Penalty notices are published on the publicly searchable PRS Exemptions Register.
Does MEES apply in Scotland and Wales?
MEES in its current domestic form applies in England and Wales under the same Regulations. Scotland operates a separate energy efficiency framework under Scottish-specific legislation. The 2030 EPC C target and Warm Homes Plan are England and Wales policies; Scotland has its own roadmap.
