Cal. Health & Safety Code § 114367.1
(b) A microenterprise home kitchen operation shall be exempt from all of the following provisions:
(2) Any provision in this part relating to sinks, warewashing machines, and manual or machine sanitation, including, but not limited to, Sections 114099, 114099.2, 114099.4, 114101.1, 114101.2, 114103, 114107, 114123, 114125, 114163, and 114279, provided that all of the following conditions are met: