California Code, Civil Code - CIV § 798.64

(b) During any period that a homeowner is unable to occupy their mobilehome or mobilehome space due to a mandatory evacuation order pursuant to a disaster, the homeowner's obligation to pay rent shall be discharged for the period during which the homeowner is required to be evacuated.  If the homeowner has paid rent in advance for any portion of the evacuation period, management shall return that portion of prepaid rent to the homeowner within 10 calendar days after the evacuation order is lifted, or the homeowner may deduct that amount from the next month's rent which becomes due and payable after the evacuation order is lifted.

(c) For purposes of this section, “disaster” means a natural or manmade emergency resulting from an earthquake, flood, fire, riot, storm, drought, plant or animal infestation or disease, pandemic or epidemic disease outbreak, or other natural or manmade disaster for which a state of emergency has been declared by the President of the United States or the Governor.