on a closed account it takes 3 months for a house to fall, open a second account and place a house, friend your characters to it and close it, you can use it for three months then open it back up, then your only paying every few months for an extra account.
you could also just open free trial accounts and place houses every few months, free storage for eternity, except you'll have to move every few months.
many people do it but its frowned upon, ive done it for a long time and i also have protested it for a long time, ea wont do a thing about it so i dont care anymore, its been around and happenning for 6+ years since they changed the housing system.