I suggest locking the person to their slot on civ, the lock being released when the server restarts. I'm not fully sure if you can, but maybe create some type of parking area for 2 cars? A garage or a driveway? Maybe introduce a house key too, so only people with that key (copies can be made) can enter, but a max of 3 copies if that's possible. I also suggest Designated areas of the city for different types of civs (Functionaries next to civ spawn, doctors next to hospital, Profiteers next to industrial park etc.)

So the Psychopaths own no land whatsoever? I guess that's the role of lost wanderers in an apocalypse. As for the unnamed clan, they are bandits. Should they be organized (E.g: The Great Khans from Fallout: New Vegas who reside in Red Rock Canyon) they should have some name that provokes a sense of superiority, domination and, ultimately, mercilessness. Should they be disorganized (E.g: Fiends from Fallout: New Vegas) they should possess a name that strikes fear into their enemies, asserts a powerful but somewhat limited control and should be sporadic: random, usually makes a little reference to the actual history of the clan but not by much.