California Code, Business and Professions Code - BPC § 8765

(a) When it has been made by a public officer in his or her official capacity and a reproducible copy thereof, showing all data required by Section 8764, except the recorder's statement, has been filed with the county surveyor of the county in which the land is located.  Any map so filed shall be indexed and kept available for public inspection.

(b) Made by the United States Bureau of Land Management.

(c) When a map is in preparation for recording or shall have been recorded under the provisions of the Subdivision Map Act.

(d) When the survey is a retracement of lines shown on a subdivision map, official map, or a record of survey, where no material discrepancies with those records are found and sufficient monumentation is found to establish the precise location of property corners thereon, provided that a corner record is filed for any property corners which are set or reset or found to be of a different character than indicated by prior records.  For purposes of this subdivision, a “material discrepancy” is limited to a material discrepancy in the position of points or lines, or in dimensions.

(e) When the survey is a survey of a mobilehome park interior lot as defined in Section 18210 of the Health and Safety Code, provided that no subdivision map, official map, or record of survey has been previously filed for the interior lot or no conversion to residential ownership has occurred pursuant to Section 66428.1 of the Government Code.