I did some research on this few months ago. The rules and regulations are different from state to state, city to city. One of the tiny house builders I spoke t

I did some research on this few months ago. The rules and regulations are different from state to state, city to city. One of the tiny house builders I spoke to, told me that when a client comes to him, they often don't know the rules of their area, and it usually takes a lot of time for the builder to find out those rules (online research, call up gov offices etc). He was saying he'd pay good money for a "rulebook" - if someone can compile the rules and put them in an easily searchable format (and keep them updated). So yeah, there are zoning requirements and it's a good idea to do research before going for a tiny house.