CA Prob Code Section 201

(a)

Proceedings under this chapter shall be commenced in the superior court of the county of which the decedent was a resident at the time of death or in the superior court of any county in which the property is located.

(b)

Proceedings under this chapter shall be commenced by filing a petition that sets forth all of the following information:

(1)

The jurisdictional facts.

(2)

A particular description of the affected property and of the interest of the petitioner in the property.