An energy assessment of your home will involve both an internal and external inspection of the property. For the purposes of obtaining an Energy Performance Certificate, they can only be undertaken by a fully accredited Domestic Energy Assessor (DEA) .

It is advisable - for your own peace-of-mind - to ask the DEA to bring along proof of accreditation when booking the appointment.

You could also try asking for their accreditation number over the phone and check its authenticity using the Government's central register of domestic energy assessors before they even set-foot near your front door.

As part of a DEA's accreditation, a check on their Criminal Record is made with the Criminal Records Bureau (CRB) - It might be additionally comforting to know that the check (at the time of writing), is more comprehensive than those undertaken for such professions as, Gas Inspectors, for instance.

We arrange the date, time and access arrangements for the inspection. We will ask you to answer some questions about the property.
We will either send you a short questionnaire to fill out or we will just ask you over the phone when we arrange the inspection. Don't worry if you can't answer some of the questions!

On the day of the inspection we would prefer if you were present. If this is not possible we can collect and return your keys from a person of you choosing e.g. your estate agent. Please leave any paperwork we sent you and any requested documents in plain view. If you are arranging for someone else to be present please make sure they have our contact details.

When we inspect the property we will:
1.. take internal or external measurements of the property, draw floor plans and make site notes. 
2...will need clear access to all areas of the property to assess the thermal performance and        efficiency of  the property including the loft, cellar, back garden, meter cupboards, heating systems and their controls, i.e. boilers, timers, hot water cylinders, thermostats, etc. record details of any 'renewables' you have.
3...photograph some aspects of the property for the report.

Iit might be necessary to open windows and doors to determine wall thicknesses. We won't: take up floorboards or drill into walls. In fact the inspection is purely visual. make you have any improvements done.

Our role is to draw up the EPC which will contain recommended changes, it's up to the property owner to act on these suggestions or not. For the average box shaped 3 bedroom property, the inspection will take around an hour. If the property is more complex or has multiple extensions it might take longer but don't worry we don't bill by the hour!
We produce your report and we endeavour to make the report avaliable no more than three working days from inspection.

Following the inspection the Domestic Energy Assessor will produce an Energy Performance Certificate for your property.  This will be lodged on the governments national database and a copy will be sent to you.

Finally If you have any general questions about the assessment please don't hesitate to ask. Please note that specific questions about the property will have to wait until we produce the report. If you are unhappy with any aspect of the inspection please let us know and we will endeavour to resolve the situation. If necessary, we have a formal complaints process which may lead to an independent decision by our accrediting body.