Sacramento County ban on home “major auto repair”

In my area code enforcement is selective.
For example.
You can park a unregistered,unkept,uninsured motorhome,and live in it on a city street. Throw garbage out the window and piss on the sidewalk all day long. You can rob the neighborhood blind and your golden. Nobody can touch or move you. There is no profit in it.
However if you bring home a classic car and try to work on it on your own property, then some rat fink will look over fence and snitch. There is profit in that.