Chapter 3. Jurisdiction And Venue of California Family Law Code >> Division 12. >> Part 3. >> Chapter 3.

(a) A person who has sexual intercourse or causes conception with the intent to become a legal parent by assisted reproduction in this state thereby submits to the jurisdiction of the courts of this state as to an action brought under this part with respect to a child who may have been conceived by that act of intercourse or assisted reproduction.
  (b) An action under this part shall be brought in one of the following:
  (1) The county in which the child resides or is found.
  (2) If the child is the subject of a pending or proposed adoption, any county in which a licensed California adoption agency to which the child has been relinquished or is proposed to be relinquished maintains an office.
  (3) If the child is the subject of a pending or proposed adoption, the county in which an office of the department or a public adoption agency investigating the petition is located.
  (4) If the parent is deceased, the county in which proceedings for probate of the estate of the parent of the child have been or could be commenced.