Chapter 3. Residence Requirements of California Family Law Code >> Division 6. >> Part 3. >> Chapter 3.

(a) Except as provided in subdivision (b), a judgment of dissolution of marriage may not be entered unless one of the parties to the marriage has been a resident of this state for six months and of the county in which the proceeding is filed for three months next preceding the filing of the petition.
  (b) (1) A judgment for dissolution, nullity, or legal separation of a marriage between persons of the same sex may be entered, even if neither spouse is a resident of, or maintains a domicile in, this state at the time the proceedings are filed, if the following apply:
  (A) The marriage was entered in California.
  (B) Neither party to the marriage resides in a jurisdiction that will dissolve the marriage. If the jurisdiction does not recognize the marriage, there shall be a rebuttable presumption that the jurisdiction will not dissolve the marriage.
  (2) For the purposes of this subdivision, the superior court in the county where the marriage was entered shall be the proper court for the proceeding. The dissolution, nullity, or legal separation shall be adjudicated in accordance with California law.

(a) In a proceeding for legal separation of the parties in which neither party, at the time the proceeding was commenced, has complied with the residence requirements of Section 2320, either party may, upon complying with the residence requirements, amend the party's petition or responsive pleading in the proceeding to request that a judgment of dissolution of the marriage be entered. The date of the filing of the amended petition or pleading shall be deemed to be the date of commencement of the proceeding for the dissolution of the marriage for the purposes only of the residence requirements of Section 2320.
  (b) If the other party has appeared in the proceeding, notice of the amendment shall be given to the other party in the manner provided by rules adopted by the Judicial Council. If no appearance has been made by the other party in the proceeding, notice of the amendment may be given to the other party by mail to the last known address of the other party, or by personal service, if the intent of the party to so amend upon satisfaction of the residence requirements of Section 2320 is set forth in the initial petition or pleading in the manner provided by rules adopted by the Judicial Council.

For the purpose of a proceeding for dissolution of marriage, each spouse may have a separate domicile or residence depending upon proof of the fact and not upon legal presumptions.