The commentary is particularly aimed at practitioners in the executive board and supervisory board of housing cooperatives, employees of auditing associations, as well as lawyers and courts dealing with cooperative law issues. The authors explain the legal situation based on the status of the Cooperative Amendment from July 2017 and the current case law in a clear systematics and understandable language. Topics include: jurisdiction and delineation of competencies between the cooperative bodies, legal status of members and representatives, liability of board and supervisory board members, accounting, taxation, and auditing of housing cooperatives. New in the third edition: transformation law, particularly the merger of housing cooperatives.