Following a two-year research and assessment project undertaken
by Lovell Chen, seven of Australia's air traffic control towers have been recommended for nomination to the Commonwealth Heritage List.

The project included the preparation of a typographical study of control towers, which has identified developments in the design, height and location of the towers since the interwar period.

The control tower project was undertaken as part of Airservices
Australia's compliance with the requirements of the Environmental Protection & Biodiversity Act. It may be the first detailed study of
the building type in the world.