Who Is The Largest Property Owner? The United States government owns approximately one third of all properties. This includes libraries, museums, police stations, fire stations, court houses, subways, schools, airports, roads, highways, zoos, hospitals, public housing, office buildings, parks, forest land, prisons and military bases.  Because of this, the US goverment is also in the real estate business as managers who negotiate, sell, lease, and appraise. Govenment agencies such as the Veterans Administration and the Federal Housing Administration over see that the real estate lending programs operate smoothly. Website: http://www.betterlifestyles.com