As an FC leader who inherited the FC when I already had my own, private house, I say no. Why should I have to lose my medium house because I ended up with a FC mansion too? My private house is decorated after my personal taste. The FC mansion is decorated to look more like a meeting place for several people. I don't consider the FC house my house, even if I technically own it.
We need a better housing system, not to take away houses from players who have them.