California Code, Code of Civil Procedure - CCP § 1260.220

(a) Except as provided in subdivision (b), where there are divided interests in property acquired by eminent domain, the value of each interest and the injury, if any, to the remainder of such interest shall be separately assessed and compensation awarded therefor.

(b) The plaintiff may require that the amount of compensation be first determined as between plaintiff and all defendants claiming an interest in the property. Thereafter, in the same proceeding, the trier of fact shall determine the respective rights of the defendants in and to the amount of compensation awarded and shall apportion the award accordingly. Nothing in this subdivision limits the right of a defendant to present during the first stage of the proceeding evidence of the value of, or injury to, the property or the defendant's interest in the property; and the right of a defendant to present evidence during the second stage of the proceeding is not affected by the failure to exercise the right to present evidence during the first stage of the proceeding.