It most certainly does break fair housing laws, unless you are going to transfer everyone that complains about the noise in your complex. For example, lets say you transfer her and then the person you move in that unit wants to transfer within a month or two because of the noise. You better be prepared to transfer that tenant as well and that could continue until no-one will live below this resident. You have already established that you agree, the person is making too much noise, because you transferred the tenant that complained about the noise. So for me......if you moved me in that unit, I would ask you why you think it is okay for me to live below someone that makes so much noise and not okay for that tenant you transferred? Was it because the person you transferred was someone you liked but you don't like how I look, so you are not going to transfer me? Was that your reason? You have to deal with the issue, not transfer the tenant reporting the issue.