Defence Estate and Infrastructure Group

The Defence Security and Estate Group (abbreviated as SEG) is the infrastructure and service delivery organisation of the Australian Department of Defence responsible for environmental stewardship, land management and facilities maintenance of the Australian Defence Force. The Group is led by the Deputy Secretary for Security and Estate.

The agency's name was changed from Defence Support and Reform Group (DSRG) to Defence Estate and Infrastructure Group on 1 July 2015,^[2], and later to the Security and Estate Group.

The Security and Estate Group, which oversees a budget in excess of $3 billion, with an asset base with a gross replacement value in excess of $62 billion and around 2,100 civilian and 550 military staff. The Security and Estate Group also maintains environmental stewardship of over 3 million hectares of land with more than 300 managed properties and maintains and operates more than 25,000 buildings.

• Capital Facilities and Infrastructure Branch
• Environment and Engineering Branch
• Estate Planning Branch
• Property Management Branch

• Regional Services Branch
• Estate Service Delivery Branch
• Service Delivery Program Management and Governance Branch

• Department of Infrastructure, Regional Development and Cities

• website