The special survey in March is on the topic of extended housing survey ("Erweiterte Wohnungserhebung"), just as in the previous years (Mikrozensus MZMZ7801, Mikrozensus MZ7701, …). In addition, there are questions on energy consumption of the households and on environmental influences and the accessibility of certain facilities.

Probability: Stratified: Disproportional

Face-to-face interview