Cal. Gov. Code § 66448

In all cases where a parcel map is required, the parcel map shall be based upon a field survey made in conformity with the Land Surveyors Act when required by local ordinance, or, in absence of that requirement, shall be based either upon a field survey made in conformity with the Land Surveyors Act or be compiled from recorded or filed data when sufficient recorded or filed survey monumentation presently exists to enable the retracement of the exterior boundary lines of the parcel map and the establishment of the interior parcel or lot lines of the parcel map.