Business Building Certification (EPC & DECs)

Business Building Certification with Envantage

Get Your Business Building Certification


Public and non-domestic buildings are subject to building certification requirements, designed to promote energy efficiency.

These include Display Energy Certificates (DEC) and non-domestic Energy Performance Certificates (EPC).

Failure to produce the correct certification can result in fines, or delay the building, selling or renting of a property.

Envantage provide approved DEC and Commercial EPC Energy Assessors with a suitable level of building inspection qualification, ensuring that you meet requirements.

We also offer advice on your building certification, helping you through the process.


Non-Domestic Energy Performance Certificates (EPC)

All buildings including factories, offices, retail premises and public sector buildings require an EPC whenever the building is built, sold or rented.

All non-domestic EPC’s must either be carried out by or under the direct supervision of a trained non domestic assessor, registered with an approved accreditation body.

There are three levels of building, determined by the building’s complexity and the services it uses:

  • Level 3 – Small buildings, with heating systems less than 100kW and cooling systems less than 12kW.

  • Level 4 – Purpose built buildings, with heating systems greater than 100kW and cooling systems greater than 12kW.

  • Level 5 – Larger buildings that are complex in shape.


Display Energy Certificates (DEC)

From 9 July 2015, buildings with floor areas over 250m2 that are occupied in whole or in part by public authorities, and are frequently visited by the public, must display a DEC prominently at all times.

DEC’s are intended to promote the improvement of the energy performance of public buildings and increase the transparency about energy efficiency. The certificate looks similar to the energy labels provided on electrical appliances with a scale from A to G, with A being the most efficient and G the worst.

The certificate, which is valid for one year, is accompanied by an Advisory Report (AR), which remains valid for seven years. The purpose of the AR is to help building owners improve the rating of future certificates. Whilst an AR need not be prominently displayed, it must be available.

DEC’s and AR’s must be undertaken by an accredited energy assessor using Government approved software.

The DEC takes into consideration the building’s internal floor area, operating hours and actual fuel use. If the energy assessor does not have access to suitable and sufficient information then a DEC cannot be produced.

The penalty for failing to display a DEC where required is £500 and the penalty for not having an AR available is £1,000.


Contact Envantage Today

If you require a DEC or Non-Domestic EPC, Envantage can help.

With extensive experience with building energy efficiency and certification, we are available to answer all your questions.

To get started today, simply speak with our team. Call Envantage on 0800 054 2577 or email


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Call: +44 (0) 800 054 2577


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