The defence build up transformed Darwin from an isolated and outlandish outpost into a rapidly growing and modern town.

It is a single storey symmetrical structure which is well ventilated with high wide internal spaces and fans for cooling.

[1] The building is significant for its association with the notable government architect, B.C.G.Burnett, who made an important contribution to Darwin's architecture during the period.

[1] The Headquarters Building is historically important for its association with the buildup of defence infrastructure in the years preceding the outbreak of the Pacific War, and with the development of Darwin into a major centre at that time.

[1] This Wikipedia article was originally based on Larrakeyah Barracks Headquarters Building, entry number 105192 in the Australian Heritage Database published by the Commonwealth of Australia 2020 under CC-BY 4.0 licence, accessed on 18 February 2020.