Cal. Civ. Proc. Code § 1377

The Controller shall not enter into any transaction which shall create or impose upon the owners, heirs, devisees, legatees, or other claimants of the property involved, any obligation under an executory contract, the performance of which is not already an obligation of such owners, heirs, devisees, legatees, or other claimants prior to the consummation of the transactions authorized by this chapter.