Honolulu, Hawaii has a unique form of accessory dwelling units known as an "Ohana Dwelling Unit". Ohana Dwellings were created as a permitted use in the zoning code in 1981 as a way to encourage the private sector to create more housing units (without government subsidy), preserve green fields (open space) and ease housing affordability. In 2015, Honolulu amended its zoning code to allows ADUs as a sort of Ohana Dwelling, but with fewer restrictions. To prevent creating further complexities for existing Ohana Dwellings, some of which have been condominimized and owned separately from the main house, Ohana Dwellings remain a permitted use (with different requirements and benefits than ADUs) in the zoning code. ADUs are an important component of Honolulu's Affordable Housing Strategy.