Most cities (in some instances, counties) require that businesses located within their borders obtain what is commonly called a business license. In reality, this is an application to pay business taxes.
Here are links to the business license applications for several of California’s largest cities:
Dana H. Shultz, Attorney at Law? +1 510 547-0545? dana [at] danashultz [dot] com
This blog does not provide legal advice and does not create an attorney-client relationship. If you need legal advice, please contact a lawyer directly.