California Code, Probate Code - PROB § 9802

(a) The personal representative or any interested person may file a petition for an order under this chapter.

(b) The petition shall state the purpose for which the order is sought and the necessity for or the advantage to accrue from the order.  If applicable, the petition shall also show the amount of money proposed to be borrowed, the rate of interest to be paid, the length of time the note is to run, and a general description of the property proposed to be mortgaged or subjected to the deed of trust, security interest, or other lien.