Well not in the sense of "It's mine now get out", more just, "Hey there is where our guild meets and this is, ICly, the headquarters and staging area of our FC." Maybe this isn't a thing in FFXIV but I know in WoW and GW2 RP guilds would claim bits of the map as their guild's headquarters (not large chunks, mind you; for instance my WoW guild's HQ is Westguard Keep, in Northrend. Not all of Westguard, just the keep) and it was, based on the honor system mostly, frowned upon for other guilds to "move in" so to speak and utilize that space while the other guild is trying to utilize it themselves.
