Minimum Evidence for auditing DECs
Posted by Mike Gordon on 24 July 2015 08:21 AM

The following table has been extracted from the Display Energy Certificate Scheme Operating requirements for auditing.

DCLG requires the following as ‘minimum evidence’


Minimum Evidence Requirements

(Site Visited)

Data file, and / or software data collection forms, relating to information used by an EA to calculate the DEC.

The EA shall provide within the site notes anything used in support of creating the DEC. Site notes shall be dated and signed.

Design Floor Plan, elevations, Sections, hand drawn schematics which allow the floor area to be calculated.

Arial view of building from Google maps (or link to this) or similar that clearly identifies the building and allows a sense of site dimensions.

Photographs of all elevations: front, rear and side (s)


Supplementary calculations undertaken by the assessor outside of the DEC software

Energy information from client

Evidence which can demonstrate extended occupancy hours. This needs to be evidenced in a manner which is additional to site notes

Evidence which can demonstrate separable energy use. This needs to be evidenced in a manner which is additional to site notes

Benchmarking evidence

Can be provided through the combination of photographs and site notes



  • Remember to sign and date your site notes; this needs to be reflective of the actual inspection date.
  • Photos need to be provided individually in their original jpeg format (not embedded into a pdf or word document). This allows the date taken to be checked against the nominated inspection date.
  • Site notes need to be scanned and not photographed.

Minimum Evidence Requirements

(Site not Visited)

Data file, and / or software data collection forms

No change in use, occupancy hours, separable energy use, building dimensions.

Energy information, site information; Checks as per the case with “site visit”


Minimum Evidence Requirements

(Advisory Report)

Site schematic, site notes detailing key systems. Photographs as necessary.

Evidence required to justify the suppression or inclusion of additional recommendations

Signed and dated site notes. Photographs of building and services.


The above table will be used as part of our auditing process; missing evidence will be clearly marked and could have an impact on the auditors ability to complete a satisfactory audit.


Please review your Inspection and evidence submission processes to ensure that you are able to comply with the Government Requirements.