To facilitate increased residential density within the city limits of Portland, Oregon, home owners can add “detached accessory structures” to their residential lots under a housing ordinance provision for ‘co-housing.’
One example, the Garden Cottages at Ruth’s House are two tiny homes adjacent to a larger dwelling. The bathroom uses a combo sink and toilet fixture to save space and water. A large deck acts to expand the living space to the outdoors.
Eli Spevak of Orange Splot Cohousing Development of Portland, constructed the two “detached accessory structures” on a single-family residential lot next to a existing home. The cottages were part of the 2009 Build it Green! home tour.