Henderson vs the world: How Perth is stacking up as a global submarine city

Western Australia's Henderson Marine Precinct, a 150-hectare industrial strip about 25 kilometres south of the Perth CBD, is being positioned as the centrepiece of Australia's nuclear-powered submarine ambition. The federal government has committed more than $8 billion to submarine construction and sustainment infrastructure at Henderson through to 2034, and the WA Labor government has earmarked a further $1.2 billion in complementary state spending on roads, utilities and workforce housing in the Cockburn corridor since last year's budget surplus landed at $3.6 billion.

The urgency is real. Under the AUKUS pathway, Virginia-class submarines are expected to begin rotating through HMAS Stirling on Garden Island from as early as 2027, with the first Australian-built SSN-AUKUS vessel scheduled for delivery in the early 2040s. That timeline compresses what would, in any other context, be generational industrial planning into something closer to a decade of sprinting.

What other submarine cities built — and how long it took them

The useful comparisons are not especially comfortable reading for Perth boosters. Groton, Connecticut — home to General Dynamics Electric Boat and the United States' primary submarine construction yard — took roughly four decades from the late 1950s to build out the workforce pipeline, supplier ecosystem and community infrastructure that now sustains roughly 19,000 direct and indirect jobs within a 30-kilometre radius. Portsmouth in Hampshire, England, has hosted continuous naval shipbuilding since the 16th century; its current BAE Systems submarine sustainment operation employs around 6,000 people and is underpinned by a regional TAFE-equivalent college system that has been feeding tradies into the yard for generations. Brest, on France's Atlantic coast, operates the Direction des Constructions Navales site as part of a state-owned enterprise with deep roots in the surrounding Finistère economy.

Henderson has none of that inherited depth. What it does have is roughly 3,400 workers across the precinct today, a cluster of existing defence contractors including Austal and Civmec, and a greenfield opportunity to design workforce and supply-chain systems without having to demolish what came before. Austal's Henderson facility on Cockburn Road already builds Pacific patrol vessels and has retrofitted itself for larger steel construction. Civmec's fabrication yard, also on the precinct, has the heavy-lift capacity most Australian industrial sites lack entirely.

The state government's Defence and Industry Capability Plan, updated in March 2026, identifies 47 WA-based companies currently holding AUKUS-adjacent contracts, most of them clustered between Henderson and the Jandakot technology corridor to the northeast. The plan targets growing that figure to 120 suppliers by 2030.

Housing and workforce: the pressure points no precinct plan fixes easily

Groton's lesson — and it took decades to fully absorb — is that submarine precincts hollow out if workers cannot afford to live nearby. The median house price in the Cockburn local government area, which covers the Henderson precinct, sat at $712,000 in June 2026 according to REIWA data, up 18 per cent in two years. That is putting pressure on the tradies and engineers the precinct most needs. The state government's Metronet extension to Cockburn Central has improved access from the northern and eastern suburbs, but there is no fast rail link to Henderson itself, and bus connections from Fremantle remain infrequent.

The City of Cockburn submitted a proposal in April to rezone 340 hectares of land along Armadale Road for medium-density residential development specifically targeting defence workforce housing, but planning approvals remain with the Western Australian Planning Commission. No decision has been publicly flagged.

The next 18 months will be the signal. If the federal government's Australian Submarine Agency — headquartered in Canberra but with its WA operational hub in Fremantle — can lock in long-form contracts with at least a dozen local tier-two suppliers before the end of 2026, the precinct will begin to resemble what Groton and Portsmouth look like today. If it cannot, Henderson risks repeating a familiar Australian pattern: announcing the ambition, importing the expertise, and watching the economic multiplier flow somewhere else.