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We support registered BER and DEC assessors with professional and technical guidance, training and software.

Software and Methodology

Access DEAP and NEAP software and methodologies to complete domestic and non-domestic Building Energy Rating certificates.

Access DEAP and NEAP

HARP database

Search for energy efficiency information on home heating products to help calculate BERs.

Search HARP

Code of Practice

Learn about the role and responsibilities of a registered BER or DEC assessor.

Code of Practice

Find existing BER or DEC

Check to see if a Building Energy Rating (BER) already exists for a home or other property.

Check a BER

Non-domestic Building Regulations

Find a range of resources about Part L Building Regulation compliance for buildings other than dwellings.

About building regulations

Professional Guidance

Understand and meet your obligations as a registered assessor. This guidance will help you to deliver a high quality, professional BER service to clients.

Guidance for assessors

Technical support for BER assessors

This technical support section gives domestic BER assessors support and guidance across a range of topics from heat pumps to publication.

Technical support