Cal. Health & Safety Code § 50891.5

Each congregate housing development shall, to the maximum extent feasible, as determined by the department, incorporate the design, social, and economic development components of Sections 50888.5 to 50889, inclusive, considering the size, design, and purpose of these units. These selection and occupancy criteria shall, in addition, include an agreement by the residents to undertake joint responsibility for maintenance and the social and economic components of the housing. The department may require professional management and maintenance of each project to supplement that provided by the residents of the housing development.