Coles Knapp Energy Assessors is a trading name of Coles Knapp Ltd, registered in England and Wales, Company Number 6637135.
Registered Address: 102 Bowen Court, St. Asaph Business Park, St. Asaph, Denbighshire, LL17 0JE

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Domestic Energy Assessor - Domestic Energy Assessor,

A Domestic Energy Assessor (DEA) assesses the energy efficiency of houses and suggests how it can be improved. Whenever homes are put onto the market or rented out an EPC is required. The requirement for EPCs has now been expanded and is now necessary in most buildings and residences.

A DEA inspects properties to collect information on the building type, heating and hot water systems, take note of dimensions of rooms, types of windows, number of fireplaces. This information is then used to produce an energy efficiency rating, “A” being the most energy efficient and “G” being the least, and an Energy Performance Certificate is then produced.  DEAs note everything that is required to produce the certificate and give practical advice to occupiers on how to improve the energy efficiency of their home such as insulation and heating efficiency.

Domestic Energy Assessors collect the information about the home, its fabric, lighting and heating. Domestic Energy Assessors may use information which has been collected previously about the building. The Domestic Energy Assessor will provide recommendations and advice which is appropriate to the building. The assessor will suggest changes which will contribute to gaining better energy efficiency.

Display Energy Certificate

Display Energy Certificates are only presently required for certain public buildings.  By law, DECs must be on display in these buildings if they have a total useful floor area over 1,000m 2, are occupied by a public authority or an institution providing a public service (further defined as 'one providing a service traditionally associated with local or national Government') to a large number of persons and therefore visited by those persons. Display Energy Certificates are based on actual energy consumption, as shown from meter readings and other fuel consumption. The DEC must show the certificate reference number, the address of the building, the name of the Energy Assessor, trading name, the name of the suitably qualified Non Domestic Energy Assessors’ recognized Accreditation and the date when the DEC was issued. DECs must be renewed after one year, though the accompanying Advisory Report lasts seven years.

This information is used to produce the Display Energy Certificate (DEC) and report for the building. The Energy Assessor will register the certificate through their own Accreditation Scheme and provide a copy to the person in charge of the building. The DEC must then be displayed in a visible and obvious place so it can be seen by the public.
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north wales office
north west office
3 Bredbury Business Park, Stockport, Cheshire, SK6 2SN

tel: 0844 848 2969


2 Tai Tywyn Business Centre, Sandy Lane, Prestatyn
Denbighshire, LL19 7SF

tel: 01745 854170
fax: 01745 889704
Energy Assessors
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DECs and Advisory Reports
Part L Building Regs Compliance Checks
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