The proposed deadline for commercial non-domestic properties to achieve an EPC C rating under the Minimum Energy Efficiency Standards (MEES regulations) is 1 April 2027.

A further proposed tightening to EPC B is targeted for 1 April 2030.

Important context:

These dates remain proposed under the government’s published consultation response. They are not yet enacted in statute, but the direction of travel is set and the property industry is planning to them.
From 1 April 2023, it has already been unlawful to continue letting a non-domestic property below EPC E. The 2027 milestone moves the floor up to C and applies to all leases, not just new ones.
Properties currently rated D or below need active improvement now to be compliant by April 2027. The lead time on most upgrade works (LED relighting, controls, fabric improvements, heat pump installation) means decisions need to be made well in advance.
Non-compliance penalties under the existing framework reach £150,000 per breach. Penalty levels for the 2027 uplift are expected to follow a similar structure.

To plan a route to EPC C, start with a current EPC and a Vital EPC Plus decarbonisation report. Contact Vital Direct to discuss your portfolio.