Cal. Code Civ. Proc. § 1855
When any map which has been recorded in the office of the recorder of any county is injured, destroyed, lost, or stolen, any person interested may file in the superior court of the county in which the map was originally filed or recorded a verified petition in writing alleging that the map has been injured, destroyed, lost, or stolen without fault of the person making the application, and that the petitioner has a true and correct copy of the original map which he or she offers for record in the place of the original map. The petition shall be accompanied by a copy of the true copy offered for recording.
Upon the filing of the petition the clerk shall set it for hearing by the court, and give notice of the hearing by causing notice of the time and place of the hearing to be posted at the courthouse in the county where the court is held at least 10 days prior to the hearing. A copy of the petition and a copy of the true copy offered for record shall be served upon the recorder of the county in which the proceedings are brought at least 10 days prior to the hearing. The court may order any further notice to be given as it deems proper. At the time set for the hearing the court shall take evidence for and against the petition, and if it appears to the court from the evidence presented that the copy of the map submitted is a true copy of the original map, it shall decree that the copy is a true copy of the original map, and order the copy placed of record in the office of the recorder in the place of the original map.
A certified copy of the decree shall accompany the true copy of the map for record. When presented to the county recorder for record, he or she shall place of record the copy of the map in the place of the original map.
When placed of record the copy shall have the same effect as the original map, and conveyances of property referring to the original map shall have the same effect as though the original map had not been injured, destroyed, lost, or stolen, and conveyances thereafter made referring to the copy of the original map shall be deemed to refer also to the original map.
Ca. Civ. Proc. Code § 1855