California Code, Government Code - GOV § 66498.3

(a) Whenever a subdivider files a vesting tentative map for a subdivision whose intended development is inconsistent with the zoning ordinance in existence at that time, that inconsistency shall be noted on the map. The local agency may deny a vesting tentative map or approve it conditioned on the subdivider, or his or her designee, obtaining the necessary change in the zoning ordinance to eliminate the inconsistency. If the change in the zoning ordinance is obtained, the approved or conditionally approved vesting tentative map shall, notwithstanding subdivision (b) of Section 66498.1, confer the vested right to proceed with the development in substantial compliance with the change in the zoning ordinance and the map, as approved.

(b) The rights conferred by this section shall be for the time periods set forth in subdivisions(b), (c), and (d) of Section 66498.5.