Public factory estates are blocks of factory buildings owned by the Government of Hong Kong. Built between the late 1950s and the early 1980s, most of these industrial buildings have been demolished during the 1990s and 2000s, while some have been converted and a few are still active. While these buildings are notable as witnesses of the history of manufacturing in Hong Kong and of the public housing policy of the Government of Hong Kong, they represent only a fraction of the industrial buildings of the territory: there were about 1,700 industrial buildings in Hong Kong in 2003.[1]