The issue is whether the management company and the Association have the authority or power to stop you from moving in. Your would-be landlord may own the condo, but he or she is bound by the rules of his/her association. If those rules prevent you from moving in (e.g. you don't meet some criteria to be a tenant) and/or give either the management or the Association the power to bar you, then you can't move in--those rules will be enforceable. On the other hand, unless there is something in the rules governing this building or community which specifically prohibits you from moving in or gives the others the right to choose to bar you, then you can move in--the owner of a condo may sublet to whomever he or she wants, so long as he or she does no violate rules governing his or her unit.