“Prostitution in residential premises”, according to the authorities’ definition, occurs, if apart from using rooms as living quarters, to a lesser extent prostitution takes place. The use of the building for the purpose of prostitution is not indicated on the building. If up to two prostitutes practise their trade in premises where they live and have their main place of residence, then this counts as “prostitution in residential premises”. If three or more people share living quarters then it only counts as “prostitution in residential premises” if the area of the rooms intended to be used for the purpose of prostitution does not exceed 50% of the living space and usable floor space of the whole apartment and there are purely private places to retreat to (private rooms), which make normal residency apart from practising prostitution possible.
See brochures on the prostitution law of the local criminal prevention council in Hanover.