Housing in Final Fantasy XIV has something of a problem insofar as there are only so many houses to go around and a lot of players who want one. While the team is definitely aware of this fact, it’s still a problem worth noting. And this has not been materially helped by the fact that the game’s automatic demolition timers have been turned off since March of this year. But that’s changing soon, as the automatic demolition timers will turn back on with the launch of patch 5.4 in December.the timer will be turned back on, with the timer possibly automatically completing if a player has not accessed the house within the suspended period. A mail notification will be sent to everyone thus affected, but you can cut this off ahead of time by making sure that you are using your house properly before the patch launches in December.
Source: Official Site