 The oldest forms of the planned unit development in America appeared shortly after World War II in the Levittowns and Park Forest developments, as whole communities within the limits and orbits of large metropolitan centers.The first zoning evidence of PUD was created by Prince George's County, Maryland in 1949.It "permit[ed] the development of a large tract of land as a complete neighborhood unit, having a range of dwelling types, the necessary local shopping facilities and off-street parking areas, parks, playgrounds, school sites, and other community facilities" (Burchell 43).