California Code, Code of Civil Procedure - CCP § 1263.110

(a) Unless an earlier date of valuation is applicable under this article, if the plaintiff deposits the probable compensation in accordance with Article 1 (commencing with Section 1255.010) of Chapter 6 or the amount of the award in accordance with Article 2 (commencing with Section 1268.110) of Chapter 11, the date of valuation is the date on which the deposit is made.

(b) Whether or not the plaintiff has taken possession of the property or obtained an order for possession, if the court determines pursuant to Section 1255.030 that the probable amount of compensation exceeds the amount previously deposited pursuant to Article 1 (commencing with Section 1255.010) of Chapter 6 and the amount on deposit is not increased accordingly within the time allowed under Section 1255.030, no deposit shall be deemed to have been made for the purpose of this section.