Northgate is a suburb north-east of Adelaide, South Australia. A petition was made in 1998 in a joint venture between the State Government and AVJennings to develop the area and annex it from the existing suburb of Northfield. It was formally created in June 2000. It is approximately a 10-minute drive from the Adelaide City Council area and is currently undergoing the second stage of development on land previously owned by the South Australian Department of Agriculture.