I think that it is great that your jurisdiction recognizes this type of assisted living situation Francis. As far as code compliance goes, these units are like big hospital rooms with all the amenities for self preservation included. I do not know if they are IRC or HUD but I can't imagine they are not built substantially. In my neck of the woods, I would definitely need to see some sort of approved for medical/residential use compliance. Otherwise, I'd end up with a bunch of granny cabin tuff sheds with a bed, a porta potty, a two burner stove, a dorm fridge, and an extension cord running to the house. One thing that is substantial with the legitimate ones is the price tag! Still think it is a great idea though and would be willing to allow them here.