California Code, Probate Code - PROB § 2107

(a) Unless limited by court order, when a court of this state appoints a guardian or conservator of the person of a nonresident, the appointee has the same powers and duties as a guardian or conservator of the person of a resident while the nonresident is in this state.

(b) When a court of this state appoints a guardian or conservator of the estate of a nonresident, the appointee has, with respect to the property of the nonresident within this state, the same powers and duties as a guardian or conservator of the estate of a resident. The responsibility of such a guardian or conservator with regard to inventory, accounting, and disposal of the estate is confined to the property that comes into the hands of the guardian or conservator in this state.