Services

Energy Performance Certificates for offices, retail units, warehouses and mixed-use commercial buildings required for sale, let or lease renewal.

Commercial EPCs

Specialist non-domestic assessments for clinics, surgeries and healthcare facilities, accounting for specialist equipment and ventilation requirements.

Healthcare Building Assessments

MEES & Compliance Advice

Guidance on Minimum Energy Efficiency Standards and what a building's current rating means for letting eligibility.

A street view of a brick building with a storefront on the ground floor, illuminated from inside. The upper floors have windows with some warm lights on inside, and there are plants and trees in front of the building.

Modern green office building with large glass windows on a city street, flanked by older brick buildings.

Why Compliance Matters

Legal Requirements

Every commercial property must have a valid EPC when it’s built, sold or let — this has been a legal requirement since 2008. But for rented property, the real exposure isn’t just having a certificate; it’s its rating.

Under the Minimum Energy Efficiency Standards (MEES), non-domestic property must currently achieve at least an E rating to be legally let, unless a valid exemption is registered. Letting a property below that threshold carries serious financial risk: fines of up to £50,000 for breaches under three months, rising to up to £150,000 for breaches of three months or more (calculated against the property’s rateable value) — and the breach is published publicly.

The standard is also getting stricter. Government proposals (confirmed June 2026) would require buildings over 1,000 sqm to reach a B rating by 2031, where cost-effective. Buildings under that size stay at E for now, with more flexibility to improve over time. Getting an accurate, up-to-date assessment now means you know exactly where a property stands — and what, if anything, needs addressing before a sale, letting, or compliance deadline catches you out.

Find Out Where You Stand - Book an Assessment

A couple of practical notes: keep an eye on that 2031/B-rating change since it’s not law yet — it still needs secondary legislation to pass through Parliament, so I’d phrase it as “proposed” rather than definite, which I’ve done above. Once it’s confirmed in legislation, that paragraph is worth tightening to sound more certain, since it’ll become a stronger urgency hook, especially for larger commercial clients.

Energy Performance Certificate rating chart showing bands A to G, with the current legal minimum at band E and the proposed future minimum at band B

Colorful row of commercial buildings on a city street with pedestrians and bicycles.

Where We Work

QPS Diagnostics covers all of Central London, along with South East and South West London in full. North London coverage currently extends to Zone 3. We also take on assessments across parts of Kent and Surrey.

Outside these areas? Get in touch — larger projects and portfolios further afield are considered on a case-by-case basis