I have no idea if this plugin exists already, or if it's part of another plugin as a config. I'm looking for a plugin that allows you to disable users from setting their homes on other factions land. However they should still be allowed to set home on unclaimed land, or their own faction property.
Back when I used factions, there was a field in the config that said something along the lines of, "Disabled commands in other factions": and I put the /sethomes and so on.