California Code, Probate Code - PROB § 10453

(a) If the personal representative is otherwise required to file a bond and has full authority, the court, in its discretion, shall fix the amount of the bond at not more than the estimated value of the personal property, the estimated value of the decedent's interest in the real property authorized to be sold under this part, and the probable annual gross income of the estate, or, if the bond is to be given by personal sureties, at not less than twice that amount.

(b) If the personal representative is otherwise required to file a bond and has limited authority, the court, in its discretion, shall fix the amount of the bond at not more than the estimated value of the personal property and the probable annual gross income of the estate, or, if the bond is to be given by personal sureties, at not less than twice that amount.