Industry policy is now security policy. Australia's defence estate is moving from announcement to delivery, and the commercial models that will govern it are still being formed. For Defence industry, investors, landholders and Commonwealth and State agencies, the decisions taken in the next 12 to 24 months will shape risk allocation for decades.
A once-in-a-generation build-out
The 2026 National Defence Strategy (NDS) and Integrated Investment Program (IIP) set total national Defence funding to 2035-36 at $887bn, with $425bn to $560bn in allocated capability investment. The enterprise infrastructure envelope alone runs to $30bn to $40bn, and the Australia, the United Kingdom and the United States (AUKUS) undersea warfare program to $71bn to $96bn.
Significantly, the IIP is the first Commonwealth program document to explicitly contemplate funding Defence's capability pipeline in part through private capital. It recognises that partnering with the private sector can help manage large upfront capital outlays and better align delivery milestones, performance outcomes and asset utilisation, and that alternative financing will be pursued where feasible and where it represents value for money. That signal opens the estate to a broader range of participants than ever before, and with them, a broader range of legal questions.
Three precincts, one pattern
Henderson Defence Precinct (WA)
The Commonwealth has committed an initial $12bn (announced September 2025) towards an estimated $25bn Henderson investment over the decade, expected to support around 10,000 direct jobs over two decades. Bechtel Infrastructure Australia was appointed in March 2026 to undertake master planning. The precinct will support continuous naval shipbuilding and depot-level maintenance and host contingency docking for nuclear-powered submarines from the early 2030s. Defence is yet to finalise the commercial delivery model, the P50 cost estimate or the market sounding process.
Osborne Naval Shipyard (SA)
Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) approval for the Submarine Construction Yard was granted in February 2026. The Commonwealth has invested $3.9bn as a down payment toward a total cost estimated at $30bn or more, covering enabling infrastructure only. Australian Naval Infrastructure (ANI), a Commonwealth Government Business Enterprise, holds the delivery mandate and is negotiating commercial arrangements with industry for future investment, including a Skills and Training Academy costing more than $500m and scaling to 1,000 learners annually from 2028.
Submarine Rotational Force-West (SRF-West) (WA)
SRF-West is expected to bring an estimated 1,100 to 3,000 US and UK naval personnel, contractors and families to the Rockingham area from 2027. The contracted supply response to date is 550 Defence Housing Australia homes, leaving a significant, bilaterally acknowledged gap in a Perth rental market with vacancy near historic lows. The WA Government's AUKUS Community Taskforce is due to report in late 2026.
The common thread is timing. Each program is in its shaping phase. Once master plans settle and works are parcelled into procurement packages, there is far less room to influence commercial structure, staging or risk allocation. Early, informed engagement with program offices and State agencies is where stakeholders carry the most weight.
Key legal and commercial considerations
Defence precincts are rarely greenfield. At Henderson, the boundary takes in land occupied by operators within the Australian Maritime Complex servicing the marine and resources sectors. Delivery may require the State (under the Land Administration Act 1997 (WA)) or the Commonwealth (under the Lands Acquisition Act 1989 (Cth)) to relocate operators or exercise compulsory acquisition powers, notwithstanding stated commitments to minimise disruption. The processes and compensation entitlements differ between regimes.
'Co-existence' will determine which operators remain, where security perimeters fall and how staging works during construction. Precincts also depend on surrounding programs. At Henderson, road upgrades, the Western Trade Coast Infrastructure Strategy and the Latitude 32 Industry Zone (tied to the Westport project and variable development contribution payments) all affect viability. Delays can cascade into delivery timelines and land values. Land and development agreements should include robust conditions precedent, sunset dates and contribution adjustment mechanisms, supported by thorough due diligence on structure plans and zoning.
While precincts themselves will be subject to stringent Defence requirements, the surrounding corridors present substantial opportunity. Workforce and supply-chain logistics will drive demand for:
- fabrication and manufacturing facilities
- warehousing, logistics and common-user infrastructure
- workforce and personnel accommodation, including institutional build-to-rent
- energy security infrastructure, given the NDS requirement for key Defence facilities to reduce reliance on the civilian grid
- specialist supply-chain premises, skills and training facilities.
Structures may include sale-and-leaseback with established primes, build-to-suit developments underpinned by long-term Defence or Defence-adjacent tenancies, joint ventures with State development agencies, and infrastructure debt with Commonwealth-backed counterparties such as ANI. Early movers may benefit from pricing but must factor in contribution uncertainty and infrastructure staging.
'Standard' lease and investment templates are unlikely to be fit for purpose. Documentation should expressly address security requirements, FIRB conditions and export control obligations.
In the Defence industrial context, tenant creditworthiness is often underpinned by Commonwealth contracts rather than independent balance sheets. Conversely, sovereign or Government Business Enterprise (GBE) counterparties, and arrangements such as allowances paid directly on behalf of allied service members, can provide sovereign-backed income. Both demand careful underwriting. For lenders and borrowers:
The estate is not only bricks and mortar. Investors in sovereign defence technology companies accumulate their own compliance obligations, including DISP governance, export controls exposure and AUKUS Pillar II technology-sharing frameworks for dual-use systems. Where portfolio companies access State or Commonwealth funding, such as the Queensland Sovereign Industry Development Fund or the National Reconstruction Fund Corporation, the interface with Defence program offices must be actively managed.
What this means for each stakeholder:
Key takeaways
- The window to shape commercial structures is open now, while programs remain in formation
. - Precinct delivery will reshape surrounding industrial corridors; tenure and compensation positions require immediate review
. - Infrastructure timing and contribution uncertainty create real risk for developers and investors
. - DISP, FIRB, export control and SOCI Act overlays will fundamentally change how leases, investments and financings are documented
. - Financing must account for Commonwealth contract tenure, acquisition scenarios and security-driven enforcement constraints.
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Published
6 October 2026This update does not constitute legal advice and should not be relied upon as such. It is intended only to provide a summary and general overview on matters of interest and it is not intended to be comprehensive. You should seek legal or other professional advice before acting or relying on any of the content.