4 ms·How is it unsustainable? I have a room for rent, that's more than a lot of people.by iamleppert 10y agoHow is it unsustainable? I have a room for rent, that's more than a lot of people.muzz 10y agoIf you don't have a window, it's technically not a room. Fire codes usually require 2 directions of egress.DrScump 10y agoI think you mean bedroom. There is no legal definition of a generic "room". Such rooms are often part of the building plan and are called "bonus rooms".