Assessment of similar buildings

In certain circumstances, a team of people working under the supervision of an accredited energy assessor can gather data to assist with the production of EPCs for a portfolio of buildings. Multiple production techniques can be used for large amounts of similar stock in both the private and social sectors. These include sampling and cloning techniques and the use of existing data where a landlord may already hold extensive energy performance data about a portfolio of buildings.

However, the energy assessor must be in a position to verify the data and to supervise how and by whom it is collected and must inspect a sample of the buildings to verify the accuracy and currency of the data held.

Data gatherers must not be used to conduct assessments to produce an EPC for individual buildings.