Ben Carroll was sworn in as Victorian Premier in late July 2026 after Jacinta Allan lost the confidence of a majority of her caucus. Within weeks of taking office, Carroll announced what may be the defining act of his pre-election period: a Royal Commission into Victoria's Big Build - the signature Daniel Andrews-era infrastructure program that transformed Victoria's rail and road network at a cost that remains disputed but is conservatively estimated in the tens of billions of dollars above original projections. The Royal Commission will examine cost overruns, procurement practices, union conduct on government construction sites, and the allegations of criminal infiltration that ultimately brought the CFMEU - the Construction, Forestry and Maritime Employees Union - under federal administration in 2024.
What a Royal Commission Actually Is
A Royal Commission is the most powerful form of public inquiry available to an Australian government. Unlike a parliamentary inquiry or an independent review, a Royal Commission is established by Letters Patent under the Royal Commissions Act 1902 (federal) or state equivalents, and carries quasi-judicial powers: the ability to compel witnesses to testify under oath, to require the production of documents, to grant immunity from prosecution in exchange for evidence, and to make findings of fact that - while not legally binding - carry significant weight and can form the basis for criminal referrals. A Royal Commission's final report and recommendations are public documents. Witnesses who lie to a Royal Commission can face contempt charges. The proceedings can be lengthy - some Royal Commissions have run for several years - but they produce a depth of factual record that no other inquiry mechanism can match.
"Victoria's Big Build - which included the Metro Tunnel, West Gate Tunnel, and Suburban Rail Loop - is conservatively estimated to have exceeded its original budget projections by tens of billions of dollars. The Royal Commission will investigate how that happened and who was responsible."
The Big Build's Cost History
The Big Build was announced as a generational infrastructure investment for Victoria. The Metro Tunnel was the anchor project: a twin-tunnelled rail line running under the CBD to link the Sunbury and Pakenham/Cranbourne lines, creating a new end-to-end cross-city route. The West Gate Tunnel was conceived as an alternative to the West Gate Bridge, creating a second river crossing for Melbourne's west. The Suburban Rail Loop - the most ambitious project in Victoria's history - was announced as a circumferential rail line connecting suburbs from Cheltenham to the Airport via the eastern suburbs, with Stage 1 running from Cheltenham to Box Hill at an original estimate of $34.5 billion, subsequently revised substantially upward by independent reviewers. Total cost overruns across the Big Build portfolio are estimated in the tens of billions, though the precise figure depends on which projects are included and how the baseline is defined. The Royal Commission's access to government documents and procurement records will, for the first time, produce a comprehensive independent accounting of where that money went.
The CFMEU's Role and Why It Matters
The Construction, Forestry and Maritime Employees Union was, for decades, one of the most powerful industrial forces in Victorian construction. Major infrastructure projects in Victoria operated under enterprise agreements negotiated with the CFMEU, and the union's influence extended from rostering and work practices to the physical presence of union officials on government sites. In August 2024, the Albanese federal government took the unprecedented step of placing the CFMEU under administration following sustained and well-documented allegations of criminal infiltration - links to organised crime figures, standover tactics, and corruption in the awarding of labour contracts on major government construction sites. The Royal Commission will examine the extent to which those practices were present on Big Build sites, what government officials knew, and when they knew it. For the Victorian Labor party, which had enjoyed a decades-long organisational relationship with the CFMEU, the findings carry significant political risk regardless of their content.
What Carroll Gains From Calling It
The political logic of the Royal Commission is straightforward. Carroll needs to demonstrate to Victorian voters that he represents a genuine break from the Jacinta Allan era - which was itself a partial break from the Daniel Andrews era - rather than a continuation of the same government under a new name. By calling a Royal Commission, Carroll signals accountability, transparency, and a willingness to air uncomfortable facts about his own party's governance record. The framing is important: Carroll is not in opposition calling for an inquiry into a rival government. He is the Premier of the government whose own construction program is under the spotlight. That degree of self-directed scrutiny is unusual, and its political intent is to neutralise the CFMEU and cost-overrun issue as an electoral liability before the November 2026 election.
Implications for the Construction Industry and Property Market
Royal Commission findings can reshape the regulatory and contractual landscape for major project delivery. If the inquiry finds systematic failures in procurement - cost-plus arrangements that incentivised overruns, inadequate market testing, or industrial arrangements that allowed labour cost inflation - the recommendations could alter how Victoria procures major infrastructure for a generation. For builders, developers, and subcontractors who work on government projects, new oversight mechanisms and procurement rules would change how they bid and how they price risk. For the property market, the more direct implications flow through the fiscal channel: Victoria's state debt has risen sharply over the Big Build era, and the degree to which the debt trajectory is seen as manageable affects the government's capacity to invest in housing supply, infrastructure, and the first home buyer schemes that support demand in the new-build market.
What NSW-Based Investors Should Understand
For Mankin Finance clients in Oran Park, Campbelltown, and the Macarthur region who are considering Victorian property, the Royal Commission is a data point in a broader risk assessment. It signals institutional instability but also - if it runs a credible process - the prospect of greater accountability and better governance on the other side. The more concrete near-term factor is Victoria's fiscal position and land tax settings, which will shape the cost of holding Victorian investment property regardless of what the Royal Commission finds. A government - of either party - that emerges from the November election with a mandate to address the state debt position may face pressure to maintain or extend revenue measures that affect property investors.
If you are reviewing your investment strategy - whether NSW or interstate - book a free 30-minute session with Michael to talk through the numbers.
Frequently Asked Questions
What will the Royal Commission actually find?
That cannot be known until the Commission completes its work. Royal Commissions typically run for 12 to 24 months before producing a final report, and the findings depend entirely on the evidence that emerges under compulsion. What can be said is that the combination of documented cost overruns, the federal government's own decision to place the CFMEU under administration, and the breadth of the Commission's terms of reference suggests a comprehensive factual record will be established. Whether that record leads to criminal referrals, structural changes to procurement, or primarily political consequences for the Labor party is a matter for the evidence.
How does the Big Build Royal Commission affect property prices in Melbourne?
The direct effect of the Royal Commission announcement on Melbourne property values is marginal. Property markets respond to interest rates, supply, employment, and population growth more than to political and governance events. The indirect effects are more relevant over the medium term: if the Commission's findings reinforce Victoria's fiscal vulnerability, that may sustain the existing pressure to maintain property-related revenue measures including land tax. Conversely, a clean Commission finding that identifies correctable problems and charts a reform path could improve investor sentiment toward Victorian assets.
Should I invest in Victorian property given the Royal Commission?
The Royal Commission is one factor among many. Victorian property has underperformed relative to NSW, Queensland, and Western Australia over the past 18 months - a function of land tax expansion, investor attrition, and softer population inflows relative to the post-COVID period. Those structural factors will resolve at a pace determined by policy settings and demographics, not by the Royal Commission's findings. The question for any investor is whether Victorian assets are priced to account for those risks - and whether your specific portfolio structure, loan arrangement, and tax position makes Victorian exposure appropriate. That assessment is best done with specific numbers rather than market commentary.
"Michael works with property investors across the Macarthur region and advises on loan structure for both NSW and interstate investment property. If you want to talk through your investment strategy in the current environment, call him on +61 420 699 983 or book a free 30-minute session at tidycal.com/3qr45gm/30-minute-meeting."