Optus Stadium, with 60,000 seats and provision for future expansion to 70,000 seats, is the third biggest stadium in Australia. Officially opened in January 2018, the multi-purpose stadium along with a sporting, recreational and entertainment precinct is located next to Swan River on Burswood Peninsula in Perth, Western Australia. The project was delivered under a DBFM procurement model.

IAG led the commercial, technical, and facilities management workstreams, developing key project documentation such as the invitation for expressions of interest, request for proposal, project agreement, and ministerial briefings. They played a central role in formulating the negotiation strategy and overseeing the selection process through to contractual and financial close. IAG developed the capital contribution model and advised government stakeholders, including the Premier, on its financial implications. Post-financial close, they continued to provide expert advice on contract interpretation, managed disputes and developed contract management tools to support project delivery.