According to the arelith wiki
The Owner has 30 IRL day but it is unclear whether members follow 30 IG or IRL days.Introduction
Type -factions into the text box to begin. Any factions you are in will appear here for you to view and manage. You can view a list of members, see salary and rank information, and even leave the faction. Characters can also create their own new faction here. Anyone can create a new faction, though newly created factions may not appear for interaction until after the next reset. Factions can have only one owner (the creator) and they will expire if the owner does not check in with the -factions command for 30 real life days. Anyone not a faction owner will be removed from the faction if inactive for 30 days.
And with the recent change to quarters in Guildhouses, one of which I purchased, I am no longer able to access.