What we do, and who for
We produce commercial (non-domestic) Energy Performance Certificates for business owners, occupiers, commercial landlords and managing agents across England and Wales. If you are selling, letting or refurbishing commercial premises, a valid EPC is a legal precondition of the transaction, and we are the people who survey the building, model it correctly and lodge the certificate on the national register so the deal can complete.
Every certificate we produce is the work of an accredited Non-Domestic Energy Assessor. That accreditation is not a badge of convenience: only an assessor who is a member of a government-approved scheme, and qualified to the level a building requires, can produce a legally valid commercial EPC. A certificate from anyone not properly accredited, or lodged incorrectly, is not valid, which is exactly when a cheap unaccredited "EPC" leaves an owner exposed, in the middle of a sale or a letting.
Assessed to the right level
Non-domestic assessments use one of two methods, and matching the building to the correct method is where accuracy comes from. The Simplified Building Energy Model (SBEM) covers most buildings, split into Level 3 for smaller, simple premises and Level 4 for larger or multi-service buildings and all new-build. The most complex buildings, those with atria or advanced HVAC controls SBEM cannot model reliably, need Dynamic Simulation Modelling (DSM), a Level 5 assessment. We assess to the level your building actually needs, and we will explain why, so you can see you are not being upsold.
Current on the rules
The rules around commercial EPCs and MEES are moving, and a great deal of the advice online is out of date. The minimum standard to let non-domestic property is EPC E, and since 1 April 2023 it has been unlawful to continue letting below E, not just to grant a new lease. On 18 June 2026 the government confirmed that, subject to secondary legislation, privately rented non-domestic buildings over 1,000 sqm are proposed to reach EPC B by 2031, and it dropped the previously floated interim EPC C milestone for 2027. We assess and advise against the rule that applies to your specific building, not the stale "EPC B by 2030" wording that still circulates elsewhere.
Honest by default
We would rather tell you the uncomfortable answer early than a comfortable one late. If your building is genuinely exempt, we will say so rather than sell you a certificate you do not need. If it comes back F or G, we hand you the ranked improvement roadmap and the cheapest route back over the E line, not just a fail. And we are transparent about price: a commercial EPC is priced on the building, and we explain what drives the fee. This site is operated by SEO Dons Ltd; the certificates are produced by accredited assessors working to the government-approved schemes named below.