King County, WA

King County, Washington, where Seattle is located, has a TDR program that has protected 225 square miles of rural and open space lands. The program redirects development pressure from outer suburbs, exurbs, and farmlands to urbanized areas of the county. King’s County runs a TDR bank to facilitate transactions, and it operates an exchange where private actors can participate in the TDR market. The county also facilitates interlocal agreements between participating municipalities and manages transfer of obligations between communities.