Places can be owned by people.
[edit]
Owned places in psyced
Using psyced you can either #define PLACE_OWNED when you create places using the place.gen method, or you can let the _path_archetype_place_default be of the owned kind by default, then you have an /owners command that you can either issue as an operator of your server, by remote control or by PSYC _request.
You can even allow _flag_trust_place_owners, but I wouldn't recommend that.