67 sites were proposed for divestment and a further 16 were placed under consideration in the Future Defence Estate Audit released in February — a figure that has turned a technical property exercise into a live debate about strategy, heritage and community impact.
The Future Defence Estate Audit: findings and limits
The audit set out to provide “a roadmap for modernising and rationalising Defence’s property portfolio,” identifying underutilised assets, rising sustainment costs and structural misalignment with current capability requirements. It recommended 67 sites for divestment and listed 16 more under consideration. But the audit did not undertake the level of consultation or site-specific due diligence normally associated with major property disposals, and assessed much of the estate more as a property portfolio than as an integrated strategic system.
The Senate inquiry: scope, responses and timetable
In March, the Senate referred Management of Defence Estate Assets to the Joint Standing Committee on Foreign Affairs, Defence and Trade. The committee received 179 submissions, held three public hearings and issued 27 sets of questions on notice. The inquiry, which the source says “has therefore evolved beyond a review of disposals,” is scheduled to be finalised in September and has become a wider test of whether Defence’s estate is being managed as a strategic system or treated primarily as a financial portfolio.
Financial assumptions, remediation and reinvestment pathways
The audit assumes divestment proceeds and sustainment savings will be returned to Defence for “capability-enabling infrastructure,” but the report notes there is no mechanism to test whether reinvestment will align with workforce priorities, sequencing needs or the National Defence Strategy (NDS). The author who gave testimony to the committee suggested that capital proceeds and annual sustainment savings be explicitly reinvested back into the estate to reshape and modernise it in line with the NDS; otherwise, rationalisation risks becoming “asset shedding rather than structural reform.”
The audit’s projected net proceeds were questioned. The source highlights that Defence sites are rarely straightforward assets to dispose of: environmental remediation, contamination risks, heritage obligations and planning constraints — and the associated remediation costs — frequently alter outcomes. Experience from previous disposal programs suggests timing, remediation costs and net returns are often optimistic; remediation and planning constraints can materially reduce net returns and extend timelines. The piece therefore calls for conservative costing, full lifecycle accounting of disposal and explicit reinvestment pathways to demonstrate how divestment outcomes strengthen capability and resilience.
Heritage, local pressures and operational readiness
Public response to the audit has been sustained and varied: concerns include military legacy, impacts on reserve and cadet units, heritage obligations and local housing pressures. The source argues that heritage sites require earlier and more deliberate evaluation so that heritage becomes an early decision input rather than a late compliance step. That would enable clearer differentiation between sites suitable for disposal, adaptive reuse, partial retention and continued Commonwealth control.
More broadly, the estate underpins force generation, workforce distribution, training, sustainment and operational readiness. The report frames the estate’s role as expanding in an “increasingly contested Indo-Pacific environment,” where estate infrastructure supports deterrence, resilience and mobilisation. Those strategic functions, the source warns, can be eroded by parcelled divestments that look efficient in isolation but generate cumulative strategic risk across the enterprise.
What this means for policymakers, reserve and cadet units, and local communities
- Policymakers and Defence decision-makers will need to adopt a structured framework that weights strategic, economic, environmental, heritage and social considerations, and to create clear reinvestment pathways so proceeds actually fund capability-enabling infrastructure aligned with the NDS.
- Reserve and cadet units are watching for site-specific outcomes: the audit’s narrow property lens may understate local training, workforce access and mobilisation implications that affect unit locations and functioning.
- Local communities and heritage groups will press for earlier heritage assessment, transparent remediation assumptions and realistic timelines, given the possible impacts on housing supply, local economies and historically significant sites.
The audit has value: it identifies ageing, fragmented or underutilised assets and highlights rising sustainment costs. But the core lesson from the evidence presented to the Senate inquiry is straightforward and unavoidable — the audit should inform decisions, not determine them. Without transparent, site-specific due diligence, conservative accounting for remediation and a mandated reinvestment pathway tied to the National Defence Strategy, divestment risks becoming a short-term financial exercise that weakens long-term capability, resilience and strategic flexibility. The Senate will finalise its inquiry in September; the practical test ahead is whether divestment will be treated as capability-linked reform or as a means of generating general savings.
