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EPC (Energy Performance Certificates) 

An Energy Performance Certificate (EPC) is required for all Dwellings and Commercial units whenever built, rented or sold. If you are buying or selling a home it is now law to have a certificate. They are also required on construction of new homes and are needed for rented homes the first time the property is let after 1 October 2008. 

The certificate records how energy efficient a property is as a building and provides A-G ratings. These are similar to the labels now provided with domestic appliances such as refrigerators and washing machines. They are produced using standard methods and assumptions about energy usage so that the energy efficiency of one building can easily be compared with another building of the same type. This allows prospective buyers, tenants, owners, occupiers and purchasers to see information on the energy efficiency and carbon emissions from their building so they can consider energy efficiency and fuel costs as part of their investment. 

An EPC is always accompanied by a recommendation report that lists cost effective and other measures (such as low and zero carbon generating systems) to improve the energy rating. A rating is also given showing what could be achieved if all the recommendations were implemented. The certificate is important because nearly 50 per cent of the UK's energy consumption and carbon emissions arise from the way our buildings are lit, heated and used. Even comparatively minor changes in energy performance and the way we use each building will have a significant effect in reducing energy consumption.

Commercial or Non Dwelling EPC’s are produced by accredited energy assessors·        

April 6th 2008 - non-dwellings > 10,000 m2 require an EPC at the point of sale or rent·        

July 1st 2008 - non-dwellings > 2,500 m2 require an EPC at the point of sale or rent·        

October 1st 2008 - non-dwellings > 50 m2 require an EPC at the point of sale or rent 


All EPC’s must be prepared by energy assessor of an appropriate accreditation level, which is dependent on the complexity and the services of the particular structure. ·        

Level 3 – Existing non-dwellings, with simple building service·        

Level 4 - New and existing non-dwellings, with more complex building services.·        

Level 5 - New and existing non-dwellings, very complex structures, these are buildings with extremely complex services.


EPC’s in simple terms are visual representation the energy costs for the lighting, ventilation, space heating and thermal performance of the fabric elements. Also taken into consideration within the calculations and modelling, are the activities that are conducted within the different zones of the structure. 

Our in-house team of SAP and SBEM Assessors are fully accredited meaning that they are perfectly placed to support our clients from the initial planning stages of a development to the final completion of a build.

 .Contact our team on    Tel: 01908 850109         or        Email your requirements to  This e-mail address is being protected from spambots. You need JavaScript enabled to view it