Many property owners are adding ADUs to help address our nation’s housing crisis. Each new ADU adds one more housing unit to our tight housing supply. More importantly, because ADUs are typically more affordable than comparable rental units, new ADU adds desperately needed affordable rental housing in neighborhoods without many affordable rental options. In Portland, Dweller ADUs are adding to the supply of affordable housing. Our installed units have rented at average rates affordable to households earning 80% of median family income.