Commonwealth Land  
  An area which is owned or held under Lease by the Commonwealth or a Commonwealth agency, land and airspace over the land held in an external territory and the Jervis Bay territory, the coastal seabed, waters and airspace of Australia or an external territory, and any other area of land, sea or seabed which is included in a Commonwealth reserve. (Section 27 of the Environment Protection and Biodiversity Conservation Act 1999 (Cth)).