Cal. Civ. Proc. Code § 1245.255

(a) A person having an interest in the property described in a resolution of necessity adopted by the governing body of the public entity pursuant to this article may obtain judicial review of the validity of the resolution:
1. (1) Before the commencement of the eminent domain proceeding, by petition for a writ of mandate pursuant to Section 1085. The court having jurisdiction of the writ of mandate action, upon motion of any party, shall order the writ of mandate action dismissed without prejudice upon commencement of the eminent domain proceeding unless the court determines that dismissal will not be in the interest of justice.
2. (2) After the commencement of the eminent domain proceeding, by objection to the right to take pursuant to this title.
(b) A resolution of necessity does not have the effect prescribed in Section 1245.250 to the extent that its adoption or contents were influenced or affected by gross abuse of discretion by the governing body.
(c) Nothing in this section precludes a public entity from rescinding a resolution of necessity and adopting a new resolution as to the same property subject, after the commencement of an eminent domain proceeding, to the same consequences as a conditional dismissal of the proceeding under Section 1260.120.