Cal. Civ. Code § 799.4

The ownership or management may require the right to prior approval of the purchaser of a mobilehome that will remain in the subdivision, cooperative, or condominium for mobilehomes, or resident-owned mobilehome park and that the selling resident, or his or her agent give notice of the sale to the ownership or management before the close of the sale. Approval cannot be withheld if the purchaser has the financial ability to pay the fees and charges of the subdivision, cooperative, or condominium for mobilehomes, or resident-owned mobilehome park unless the ownership or management reasonably determines that, based on the purchaser’s prior residences, he or she will not comply with the rules and regulations of the subdivision, cooperative, or condominium for mobilehomes, or resident-owned mobilehome park.