Cal. EVID § 1601

(a) Subject to subdivisions (b) and (c), when in any action it is desired to prove the contents of the official record of any writing lost or destroyed by conflagration or other public calamity, after proof of such loss or destruction, the following may, without further proof, be admitted in evidence to prove the contents of such record:

(1) Any abstract of title made and issued and certified as correct prior to such loss or destruction, and purporting to have been prepared and made in the ordinary course of business by any person engaged in the business of preparing and making abstracts of title prior to such loss or destruction; or

(2) Any abstract of title, or of any instrument affecting title, made, issued, and certified as correct by any person engaged in the business of insuring titles or issuing abstracts of title to real estate, whether the same was made, issued, or certified before or after such loss or destruction and whether the same was made from the original records or from abstract and notes, or either, taken from such records in the preparation and upkeeping of its plant in the ordinary course of its business.

(b) No proof of the loss of the original writing is required other than the fact that the original is not known to the party desiring to prove its contents to be in existence.

(c) Any party desiring to use evidence admissible under this section shall give reasonable notice in writing to all other parties to the action who have appeared therein, of his intention to use such evidence at the trial of the action, and shall give all such other parties a reasonable opportunity to inspect the evidence, and also the abstracts, memoranda, or notes from which it was compiled, and to take copies thereof.