Who Can Carry Out an EPC and Why Accreditation Matters?
If you are selling, renting, or building a property in the UK, an Energy Performance Certificate (EPC) is a legal requirement. But as a property owner, you might wonder: Can I just do it myself? Who is actually qualified to give my building a rating?
Understanding who can perform an EPC and why their credentials matter is vital for staying compliant with the law and ensuring your property is accurately valued.
Who Can Carry Out an EPC?
An EPC can only be produced by a fully qualified and accredited Energy Assessor. These professionals are trained to evaluate the energy efficiency of a building based on its construction, insulation, heating systems, and lighting.
There are two main types of assessors depending on the property type:
Domestic Energy Assessors (DEAs): These specialists handle residential properties. They use a methodology called Reduced Data SAP (RdSAP) to assess existing homes.
Non-Domestic Energy Assessors (NDEAs): These professionals are qualified to assess commercial properties, such as offices, retail units, and warehouses. Commercial assessments are often more complex and categorized into "Levels" (3, 4, or 5) based on the sophistication of the building's HVAC systems.
Why Accreditation Matters
It isn't enough for someone to "know about buildings." To issue a valid certificate that can be lodged on the national register, the assessor must belong to a government-approved accreditation scheme (such as Elmhurst, City & Guilds, or Quidos).
Here is why using an accredited professional is non-negotiable:
1. Legal Validity
An EPC is only legally recognized if it is lodged on the EPC Register (the GOV.UK database). Only accredited assessors have the digital credentials required to upload a certificate to this registry. If your certificate isn't on the register, it doesn't exist in the eyes of the law, which can lead to fines of up to £5,000 for domestic properties and significantly more for commercial ones.
2. Accuracy and Reliability
Accredited assessors must follow strict conventions and use approved software to calculate your property’s rating. This ensures that whether your property is in London or Liverpool, it is being judged against the same national standard.
3. Professional Indemnity Insurance
Accredited schemes require their members to hold Professional Indemnity Insurance. This protects you as the property owner. If an error is made during the assessment that negatively impacts your property's value or sale, you have a path for recourse.
4. Quality Assurance and Auditing
Accreditation bodies regularly audit their assessors. This means a percentage of an assessor’s work is reviewed by experts to ensure they are maintaining high standards. This "check on the checkers" maintains the integrity of the entire energy rating system.
How to Check if Your Assessor is Accredited
Before booking an assessment, you should always verify the individual's credentials. You can do this by:
Asking for their Assessor ID number.
Checking the Official Government Register to search for an accredited assessor in your area.
Conclusion
While it may be tempting to look for the cheapest possible quote, remember that an EPC is a legal document. By hiring an accredited Energy Assessor, you ensure that your property’s energy profile is handled with expertise, accuracy, and full legal compliance.
Need an EPC for your property? Ensure you work with a certified professional to get an accurate reflection of your building's efficiency and avoid potential legal hurdles.

