EPC Regulations UK:
2026 Compliance and Legal Requirements

Energy Performance Certificate (EPC) legislation is a critical pillar of the UK’s property market. For property owners and landlords, maintaining an up-to-date certificate is a legal mandate with significant financial implications for non-compliance.

As we move through 2026, the regulatory landscape has shifted toward stricter enforcement. This guide outlines the current legal framework and the mandatory deadlines confirmed in the 2026 Warm Homes Plan.

Accreditation Bodies: EPCs must be produced by an accredited Domestic Energy Assessor (DEA). Leading UK bodies include Elmhurst Energy, Stroma, and Quidos. You can locate a qualified professional through the official GOV.UK find an energy assessor service, which lists all current government-approved accreditation schemes.

What is an Energy Performance Certificate (EPC)?

An Energy Performance Certificate is a standardized document that acts as a “health check” for a property’s efficiency. It measures two primary factors:

  1. Energy Efficiency: An estimate of how much it costs to run the property (heating, lighting, and hot water).

  2. Environmental Impact: The property’s carbon dioxide (CO2) emissions.

During your survey, the property is graded on a scale from Band A (most efficient) to Band G (least efficient). This rating is determined by a qualified assessor who inspects the “fabric” of the building, such as insulation and glazing, alongside the mechanical systems like boilers and heat pumps.

Every valid certificate provides three critical pieces of information for the owner:

  • The Current Rating: Where the property sits today on the A–G scale.
  • Estimated Energy Costs: A projection of annual bills for heating and lighting (updated in 2026 to reflect current market rates).
  • The Recommendation Report: A bespoke, prioritized list of improvements (like loft insulation or solar panels) that would raise the rating and lower running costs.
 
Read our walkthrough of the what to expect during your EPC survey and get your property ready for its assessment.
example EPC certificate
Example EPC certificate

When is an EPC Legally Required?

In the UK, an EPC must be commissioned and made available in the following specific circumstances:

  • Property Sales: Sellers must ensure a valid EPC is available to prospective buyers from the moment the property is marketed
  • Rental Agreements: Landlords are legally required to provide a valid EPC to tenants before any tenancy agreement is signed.
  • New Build Completion: Developers must obtain an “On Construction” EPC (SAP assessment) upon completion to meet building regulations.
  • Commercial Property: Large public buildings and commercial premises are subject to specific “Display Energy Certificate” (DEC) rules.
 

Verify Your Property: You can search the Official National Register to check your current rating and expiry date.

EPC requirements are triggered by specific events. Review the criteria for EPC exemptions to determine if your property qualifies for a legal waiver.

Lettings: Minimum Energy Efficiency Standards (MEES)

The MEES regulations define the minimum rating a property must achieve to be legally let. Following the January 2026 government update, the following rules apply:

  • The Current Standard: All existing tenancies must be at least Band E.
  • The 2030 Deadline: By October 1, 2030, all privately rented homes in England and Wales must reach Band C.
  • The £10,000 Cost Cap: Landlords are expected to invest up to £10,000 to reach Band C. If the property value is under £100,000, this cap is lowered to 10% of the property’s value.
  • Non-Compliance Penalties: Local authorities can now issue fines of up to £30,000 for properties that fail to meet these standards without a valid exemption.