California Code, Health and Safety Code - HSC § 18400

(1) Enter public or private property to determine whether there exists any park to which this part applies.

(2) Enter and inspect all parks, wherever situated, and inspect all accommodations, equipment, or paraphernalia used in connection therewith, including the right to examine any registers of occupants maintained therein in order to secure the enforcement of this part and the regulations adopted pursuant to this part.