Trends in building ventilation requirements and inspection in France

French regulation regarding residential ventilation dates from 1982. Almost every new residential buildings constructed since then are equipped with a mechanical ventilation system. 
For non-residential buildings, the regulation dates from 1979 and does not impose the installation of a ventilation system as a prescriptive requirement. Nevertheless, if air renewal relies only on windows opening, a significant windows area is necessary (according to the floor area) for the building to be considered compliant with the regulation.