Cal. Const., art. XIII, § 8.5

The Legislature may provide by law for the manner in which a person of low or moderate income who is 62 years of age or older may postpone ad valorem property taxes on the dwelling owned and occupied by him or her as his or her principal place of residence. The Legislature may also provide by law for the manner in which a disabled person may postpone payment of ad valorem property taxes on the dwelling owned and occupied by him or her as his or her principal place of residence. The Legislature shall have plenary power to define all terms in this section.

The Legislature shall provide by law for subventions to counties, cities and counties, cities and districts in an amount equal to the amount of revenue lost by each by reason of the postponement of taxes and for the reimbursement to the State of subventions from the payment of postponed taxes. Provision shall be made for the inclusion of reimbursement for the payment of interest on, and any costs to the State incurred in connection with, the subventions.