The Government has confirmed its approach to Energy Performance Certificate (EPC) reforms, and for commercial properties, the headline is clear: minimal structural change for now, but tighter compliance and reporting rules are coming.
Carbon-Based Rating Remains the Core Metric
Commercial EPCs will continue to use the carbon-based Environmental Impact Rating (EIR) as the headline metric. This ensures continuity for businesses while supporting emissions reporting, MEES compliance, and net‑zero alignment. No disruption to the familiar rating system, but companies must keep tracking decarbonisation progress.
No New Headline Metrics for Commercial Buildings
Unlike domestic EPCs, which will adopt new metrics such as fabric efficiency and smart readiness, commercial EPCs will stick with the existing framework. This means no additional complexity for landlords and occupiers, at least for now.
EPC Validity Stays at 10 Years
The 10‑year validity period remains unchanged, avoiding extra assessment costs or frequency for non‑domestic properties.
An EPC is Required Before Marketing
One key change: EPCs must be in place before a property is advertised for sale or rent, rather than within 28 days of marketing. Businesses will need to plan ahead and ensure faster turnaround times.
Clearer Enforcement and MEES Alignment
While scope tightening mainly affects domestic properties, commercial landlords should expect more consistent enforcement and fewer exemptions. EPC rules will continue to interact closely with MEES obligations, with clearer guidance expected later in 2026.
Future Changes on the Horizon
Later this year, expect updates on Display Energy Certificate (DEC) validity, EPC and DEC data use, auditing standards, and air conditioning inspection reports (TM44). Large commercial and public sector buildings may face changes to DEC cycles and stricter compliance requirements.
Bottom Line for Commercial Property Owners:
- Carbon metric remains the primary rating.
- EPC validity stays at 10 years.
- EPC must be obtained before marketing a property.
- Stronger enforcement and MEES alignment ahead.
- Further changes to DECs, TM44s, and data rules expected later in 2026.