If landlords know exactly how much a large subset of their renters make, that is how much they will charge. Examples of this in action is looking at rent in m

If landlords know exactly how much a large subset of their renters make, that is how much they will charge. Examples of this in action is looking at rent in military areas and rises in BAH. They follow almost exactly, with rent being in response to BAH change. Any form of UBI will just be used as a wealth transfer to landlords that rent.