Started a new server been messing with the files moving along pretty well teaching myself. Was wondering if there was a way to make Non-Player City structures into structures players could place or if there's code already around I could plug and play for that to work. Thanks!
No code. Remove the structures you need and replace with player buildings. And yes, a player can live in a npc city.
Another way to build a home using a npc city is to modify removing the NonbuildZoneAreas from the planet regions context (as bin/scripts/managers/spawn_managers/planetName_regions.lua).