First of all, I know it is legal in Illinois to transport a firearm on your person as long as it is unloaded and in a case. I believe it has been refer to as 6 seconds to safety here. What I am fuzzy on is, can you transport on private property? Here is the scenario, my father is a plummer self employed and goes into some bad areas by himself. He has been doing it for over twenty years with no problems until recently. As stated earlier, I know he can "transport " a firearm on his person say in a fanny pack. Does anyone know the legal restrictions of going onto others property either business or residential to perform his services without leering the owners know he has a firearm for his protection? Thanks for your help.