CAL. CIV. CODE § 54.2 : California Code - Section 54.2

(a) Every individual with a disability has the right to be accompanied by a guide dog, signal dog, or service dog, especially trained for the purpose, in any of the places specified in Section 54.1 without being required to pay an extra charge or security deposit for the guide dog, signal dog, or service dog. However, the individual shall be liable for any damage done to the premises or facilities by his or her dog.

(b) Individuals who are blind or otherwise visually impaired and persons licensed to train guide dogs for individuals who are blind or visually impaired pursuant to Chapter 9.5 (commencing with Section 7200) of Division 3 of the Business and Professions Code or as defined in regulations implementing Title III of the Americans with Disabilities Act of 1990 (Public Law 101-336), and individuals who are deaf or hearing impaired and persons authorized to train signal dogs for individuals who are deaf or hearing impaired, and individuals with a disability and persons who are authorized to train service dogs for the individuals with a disability may take dogs, for the purpose of training them as guide dogs, signal dogs, or service dogs in any of the places specified in Section 54.1 without being required to pay an extra charge or security deposit for the guide dog, signal dog, or service dog. However, the person shall be liable for any damage done to the premises or facilities by his or her dog. These persons shall ensure the dog is on a leash and tagged as a guide dog, signal dog, or service dog by an identification tag issued by the county clerk, animal control department, or other agency, as authorized by Chapter 3.5 (commencing with Section 30850) of Title 14 of the Food and Agricultural Code.

A violation of the right of an individual under the Americans with Disabilities Act of 1990 (Public Law 101-336) also constitutes a violation of this section, and nothing in this section shall be construed to limit the access of any person in violation of that act.

(c) As used in this section, the terms "guide dog," "signal dog," and "service dog" have the same meanings as specified in Section 54.1.

(d) Nothing in this section precludes the requirement of the showing of a license plate or disabled placard when required by enforcement units enforcing disabled persons parking violations pursuant to Sections 22507.8 and 22511.8 of the Vehicle Code.