Quote Originally Posted by Niwashi View Post
To get a personal house, you also need to be at least level 50 and at least a Second Lieutenant in your Grand Company (which is currently max rank, though I think more ranks are being added in the expansion).

To buy an FC house, the FC needs to have reached Rank 6.

If your FC has a house, I believe the only requirement for buying a personal room within that FC house is that the FC leader needs to allow it for you in the FC's permissions settings.
No, you still need to be level 50 and a 2nd Lt. as well.