Residential buildings are those in which more than 90% of the energy reference area is used as living space (alternatively, the "cadastre vertical" of the "règlement ministériel du 21/01/2010 Mémorial A n°9" can be used). The ratio of living space to non-residential space is thus decisive for the classification of the building as residential or non-residential.
The energy pass is part of every building application at
The energy pass is also mandatory for substantial renovations that do not require building permission.
A few exceptions are exempt from the Grand Ducal Regulation and thus also from the energy pass obligation:
There are two procedures for calculating non-residential energy passports.
Regardless of whether it is a consumption pass or a demand pass:
If less than 90% of the energy reference area is used for residential purposes, an additional energy certificate (Residential Building Ordinance) must be issued for the area used for residential purposes. This is often the case for apartment buildings, residences and residential buildings that were not previously counted as residential buildings.
The energy certificates of non-residential buildings are always issued for the entire building.
The certification of the energy efficiency of functional buildings takes into account the complete building technology such as lighting, ventilation, heating, air conditioning, air humidifier and dehumidifier and therefore requires more extensive analyses.