GOV §51257.5: (a) If the state fails to make payments to a city or county pursuant to Section 16142 or 16142.

(a) If the state fails to make payments to a city or county pursuant to Section 16142 or 16142.1, or if the state provides a reduced subvention, a city or county may accept contributions from a nonprofit land-trust organization, a nonprofit entity, or a public agency for specific land under a contract within the city or county to supplement foregone property tax revenues pursuant to this section. (b) (1) A nonprofit land-trust organization, nonprofit entity, or public agency may contract with an owner of land currently under a contract pursuant to this chapter, upon approval of the contract by the city or county, for a period of up to 10 years, to keep the landowner’s property under contract with the county pursuant to this chapter, in exchange for the contribution by the nonprofit land-trust organization or nonprofit entity’s payment for an equivalent period of years of all or a portion of the foregone property tax revenue to the city or county. (2) A contract entered into pursuant to this subdivision shall be subject to any limitation in power of a nonprofit land-trust organization, nonprofit entity, or public agency. (3) A contract entered into pursuant to this subdivision shall not authorize or require the conversion of land subject to the contract into a mitigation bank site. (c) In implementing this section, a city or county shall not request or require additional conditions or restrictions on the land or the landowner for existing or future contracts. (d) This section shall not be construed as a limitation on the right of a landowner to engage in other lawful contracts or transactions with respect to their land, including, but not limited to, contracts entered into pursuant to this chapter. (e) As used in this section, “nonprofit land-trust organization” means a nonprofit land-trust organization as defined in subdivision (b) of Section 5011.7 of the Public Resources Code. (f) No contract shall be entered into on or after January 1, 2016, unless a later enacted statute, that is enacted before January 1, 2016, deletes or extends that date.