California Code, Code of Civil Procedure - CCP § 1240.330

(a) Where necessary property is devoted to public use, any public entity authorized to exercise the power of eminent domain to acquire such property for a particular use may exercise the power of eminent domain to acquire substitute property in its own name, relocate on such substitute property the public use to which necessary property is devoted, and thereafter convey the substitute property to the owner of the necessary property if all of the following are established:

(b) Where property is sought to be acquired pursuant to this section, the resolution of necessity and the complaint filed pursuant to such resolution shall specifically refer to this section and shall include a statement that the property is necessary for the purpose specified in this section. The determination in the resolution that the taking of the substitute property is necessary has the effect prescribed in Section 1245.250.