Well the question is if you're patient enough to rebuild the fc. If you're planning to just stay in the game, doing your own things, even with friends but that are in a different FC or even the same FC, and not trying to recruit thousands of people, then I would recommend, that you let the still existing members know. These can then decided if they like to move on, or stay in that FC even if it's inactive most likely. Either way, I would suggest keeping the house for now. with the upcoming expansion, if you're planning on purchasing it, you could use the buffs the FC gives. However if you're planning on finding a static or a more active FC before storm blood, then ask one of the other members maybe, if they want to continue with the FC or would like to keep the house. At the end you can always get rid of it, if needed, but at least that way it won't cause drama, that can occur if you're selling everything without other members knowledge.