From Consumer Wiki
If a landlord hires a resident manager to manage his rental property and the employee lives on site, the manager is not required to be licensed by the California Department of Real Estate.
However, if a landlord hires a person to manage the rental property and the employee lives off site, the manager must be licensed by the California Department of Real Estate.
Department of Real Estate
Sacramento, CA 95818-2500
(916) 227-0864 Enforcement division
(916) 227-0863 Fax to enforcement
(916) 227-0931 Licensing information
(916) 227-0925 Fax to licensing