If you can't get on FFXIV for 45 days, try getting a friend of yours to do it for you.

Solution: Have a friend of yours log onto your account and get in the house at least once every 45 days.

A) It's just a game.

B) You're getting majority of your money and furnishing back.

C) Buying a plot, and not using it at all, is unfair to other players who has been saving their gil and waiting.