Well, it depends on whether
you intend to stay in it or not? If you rent it out, rental should
cover your mortgage so basically all you need is to have the
initial deposit. Or if you stay, you could rent out the other room
so that would greatly reduce your burden as well. Of course if you
intend to just live there by yourself,then I would say that you
need to be earning at least 8k (depending on your lifestyle). Hope
that helps :)