more than likely, yes. And if its the one I think you're talking about. Promathia, here on stratics, owns it. All he may be doing is moving rares around that are on display. The house should be public soon, just keep checking.
( The one Promathia owns is the one near the rat spawn, "Cavern Of The Discarded" . If you are referring to the other one, then I'm not sure why you can't get into it)