According to German law, the certificate of self-containment is a certificate that condominiums or even a part-ownership are, based on the Condominium Act, sufficiently self-contained structurally from other residences and rooms. The separation is realized by, for example, walls and ceilings. Furthermore, a lockable entrance must be ensured. The certificate of self-containment is issued by the building supervisory board. This board is also responsible for the building licence and the approval of construction.
