Accessory Dwelling Units (ADUs), grannie flats, garden suites, call them what you will, can be highly affordable. Better still, in a crowded urban landscape they have a residential footprint that places no additional land requirement on a municipality.
One rusting swing set, plus one empty sand box plus weed-strewn memories of a pumpkin patch equals one potential back yard affordable housing space.
Trouble is, for thousands of potential ADU landlords who could use the extra income, the capital investment to build for a backyard tenant is a stretch.
Addressing the mutual benefit of prospective backyard landlords with tenants desperate for affordable housing has spawned a small but growing industry of ADU ‘breeders.’
Explore one such project in Portland, Oregon, plus a casual survey of other on-going similar projects in America, at the Sightline Institute: A Portland ADU Program Pairs Lower-Wealth Homeowners And Low-Income Tenants