California Code, Government Code - GOV § 51243.6

(a) The enforceability of contracts entered into pursuant to this article is necessary to permit the preferential taxation provided to the owners of land under contract, pursuant to Section 8 of Article XIII of the California Constitution.

(b) The option granted to a city pursuant to Section 51243.5 to elect not to succeed to a contract may be held only by the city.

(c) No contracting landowner has a reasonable expectation that a contract can be terminated immediately pursuant to this article without penalty.