In Paul's Server, if we ask him he will give us a town/city. I want to know how to get that in single-player, and how to have more than one.
There isn't any way in single player yet and that will be reserved for the real game... and then you will have to negotiate with NPCs.
Property protection isn't useful in single player so it just comes down to map markers... and there will be other ways (eventually) to add map markers in single player so it hasn't been a high priority.