If you plan to do business in an incorporated city
of Ventura County or Los Angeles County you will need to contact the appropriate city office for information on business licenses, permits, and/or zoning regulations.
This is a list of the various offices you may have
to contact in order to do business in Ventura County or Los Angeles County. In particular, if you are conducting your business in an unincorporated area, you must contact the county government to obtain a business tax certificate.