And almost no plumber can do that. Also, in many states, to legally advertise plumbing services, one must have a license to perform those services.
But a plumber he is, as are the many, many thousands of other plumbers in California, that do not have my C36 licenses.
I was a plumber before I started my business, I was a plumber while I took small jobs until my plumbing business license came through, and I am a plumber now, and on occasions, I hire plumbers, I even know retired plumbers that never started businesses.
California plumbers do not have to be licensed.
If I decide to drop my license and answer the city ad for “plumbers” I know that I can fulfill the requirements.