I can almost remember our GIS mapping disclaimer from my GIS Days.
This very morning we had two poor guys come in to get the scoop on a bldg. they wanted to lease and convert a portion to a restaurant, and had gotten suspicious when they were vigorously advised by the property owner that they didn't need Planning Board/Departmental approval to come in. Of couse he owes us $12K in mitigation $$$, is in trouble with the State DOT for access issues, and owes our building department so much work, they shut down his business. Thank god these guys hadn't signed anything yet. It reinstated my belief that so much heartache could be averted with a simple trip to the local planning department. It gave us yet another opportunity to bust out the... "Well, if I would you, I'd talk to my lawyer...."