There is a deviation in the PEB certification under the current rules.

In Belgium, a problem has been discovered in the energy performance certification system for buildings, and it varies from region to region. This has serious implications for owners or potential buyers.

There are different renovation calendars that vary by region and aim to achieve a certain level of energy performance in buildings within a certain timeframe. But the main problem is that the classification is set by theorists who do not take into account the rental housing market. Moreover, most owners cannot afford to undertake such costly repairs. Meanwhile, without an energy performance certificate, owners can be fined €1,000. This also poses a challenge to meeting the 2050 energy efficiency targets.

In addition, the different criteria by which building energy performance (PEB) is determined are confusing. For example, it is unfair that electrically heated buildings receive the lowest PEB rating.

The criteria that determine the energy efficiency of buildings should be revised and harmonized across regions. There should also be exceptions, especially for apartment buildings where decisions are made collectively. Overall, harmonization of the PEB certification system among regions and revision of criteria are urgent measures for economic efficiency and to address the housing crisis.