DEC Assessment

Greater Manchester EPC can provide DEC Assessments for public buildings throughout Manchester and the surrounding North West areas. We have performed DEC Assessments on various types of public buildings including schools, council buildings, leisure centres and hospitals.

What is a DEC Assessment?

Display Energy Certificates (DECs) show the energy performance of public buildings. All public buildings with a total useful floor area greater than 250m² are obligated to have a Display Energy Certificate (DEC) and advisory report. The report uses a scale from ‘A’ to ‘G’ – ‘A’ being the most efficient and ‘G’ being the least.

Once our accredited Energy Assessor has completed your report it should be displayed on A3 or large in a prominent place clearly visible to members of the public. Fines can be issued for failing to display a DEC and for not having valid updated advisory report. Please note that Advisory Reports should be updated on a yearly basis.

How long is my DEC and Advisory Reports Valid for?

  • (Over 1000m2) It must be renewed every 12 months
  • (250-999m2) It must be renewed every 10 years

Our DEC Assessment Process

  • Review of Floor Plans including gross internal area (GIA).
  • Review of 12 months utility invoices.
  • Site Visit to validate floor plans & utility invoices supplied by the client.
  • Gather and input data into the government approved ‘ORCalc’ software to generate report.
  • Completion of DEC certificate and advisory report.

DEC Assessment Quotation

For more information and quotations, please enquire or call 07875 753571.


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Why not discuss your project with a member of our team? Call us today on 07875 753 571