Zoning rules and parking in Florida

It all depends on how "above-board" you want to be. If you're in the city limits, you'll more than likely need a demo permit, then also a plumbing permit to modify the sewer connection. However, its very likely that you CAN do what you want without violating any rules.

If it were me and you wanted the property anyway, then heck, I'd do it and make someone come along and tell me not to. Chances are that'll never happen unless the neighbors complain...