California Code, Health and Safety Code - HSC § 18045.5

(a) The department shall not issue a manufacturer, distributor, or dealer license to any applicant therefor who does not have an established place of business.

(b) In the case of a dealer or distributor, the established place of business shall have an office located within the State of California. In the case of a manufacturer, the established place of business shall have a manufacturing area defined by department regulations situated on the same property. When a room or rooms in a hotel, roominghouse, apartment house building, or a part of any single-unit or multiple-unit dwelling house is used as an office or offices of an established place of business, the room or rooms shall be devoted exclusively to, and occupied for, the office or offices of the licensee, shall be located on the ground floor, and shall provide a direct entrance into the room or rooms from the exterior of the building.

(c) The established place of business shall be open for inspection of the premises, pertinent records, and manufactured homes, mobilehomes, or commercial coaches by any department representative during business hours.If records are kept at a location other than the principal dealer business location, that other location shall be open for inspection of the premises and pertinent records during normal business hours.