California Code, Civil Code - CIV § 800.44

(a) A homeowner shall not be charged a fee for a guest who does not stay with him or her for more than a total of 20 consecutive days or a total of 30 days in a calendar year.  Such a guest shall not be required to register with the management.

(b) A homeowner who is living alone and who wishes to share his or her floating home with one person may do so, and a fee shall not be imposed by management for that person.  The person shall be considered a guest of the homeowner and any agreement between the homeowner and the person shall not change the terms and conditions of the rental agreement between management and the homeowner.  The guest shall comply with the provisions of the rules and regulations of the floating home marina.