Commercial EPCs: Key Updates Businesses Should Be Aware Of
The Government has set out its direction for Energy Performance Certificate (EPC) reforms, and for commercial buildings the message is straightforward: no major overhaul yet, but stricter expectations around compliance and reporting are on the way.
Carbon-Based Rating Remains Central
Commercial EPCs will continue to use the carbon‑based Environmental Impact Rating (EIR) as the primary measure. This keeps continuity for businesses and maintains support for emissions reporting, MEES requirements, and broader net‑zero goals. The rating framework isn’t changing, but organisations still need to monitor their decarbonisation progress.
No New Metrics for Non‑Domestic Buildings
While domestic EPCs are moving towards extra indicators such as fabric efficiency and smart readiness, the commercial regime will stay with the current structure. For landlords and occupiers, this means no added complexity for the time being.
EPC Validity Still 10 Years
The 10‑year lifespan of a non‑domestic EPC remains unchanged, so there are no new assessment cycles or extra costs introduced.
EPC Required Before Marketing Begins
A notable shift: properties must now have a valid EPC before they are advertised for sale or lease, rather than securing one within 28 days of marketing. Businesses will need to factor this into timelines and ensure assessments are booked earlier.
Stronger Enforcement and MEES Coordination
Although most of the tightening focuses on the domestic sector, commercial property owners should anticipate more consistent enforcement and fewer exemptions. EPC rules will continue to sit closely alongside MEES obligations, with further clarity expected in 2026.
What’s Coming Next
Later this year, the Government is expected to issue updates on Display Energy Certificate (DEC) validity, how EPC and DEC data is used, auditing standards, and TM44 air conditioning inspection requirements. Larger commercial and public sector buildings may see changes to DEC cycles and more robust compliance checks.
In Summary for Commercial Property Owners:
- Carbon‑based EIR remains the main rating
- EPCs continue to be valid for 10 years
- An EPC must be obtained before marketing a property
- Expect firmer enforcement and closer alignment with MEES
- Updates on DECs, TM44s, and data rules are expected later in 2026.
