The thing with zoning codes is that they can be changed at any time, both in the kind of zoning that is applied to the parcel and in the basic definition of what a particular zoning class means, and that both in wording and interpretation. In all cases it is local rather than national or even state-wide. Grandfather rights exist at the whim of the zoning agency.
Correct. The county (or city) zoning board has the most power of any entity of local government. They can, and have, decided to destroy residential zones.
That would mean the local government? I just moved back up here, and I don't like what I see. Our situation is understandable, but I am worried about the future. I guess the smart thing to do is to attend all the city council meetings, and find out what is going on. I rent, but sh*t rolls downhill.