Obayashi Corporation acquires multiplex in a deal worth more than A$924 million, transferring one of Australia’s best-known builders from Brookfield to Japanese ownership. John Flecker called the sale a “massive milestone” and said there was “a clear alignment of values and aspirations between Multiplex and Obayashi, a firm established more than 130 years ago, and we see significant opportunity ahead”.
The transaction was described as a $650 million US deal and closes a line of ownership that dates back to Brookfield’s 2007 purchase of Multiplex for about A$4.2 billion. For shareholders and sector rivals, the change matters because it keeps one of Australia’s biggest builders inside the orbit of international capital rather than returning it to domestic control.
Brookfield’s A$4.2 billion exit
A$4.2 billion is what Brookfield paid for Multiplex in 2007, and A$924 million is what Obayashi is paying now. That gap shows how sharply valuations can move over time, even for a contractor with a long project list and a national profile.
1962 is when Multiplex was established in Australia, and the company has since worked on Melbourne’s Federation Square, Sydney’s Quay Tower, Sydney Olympic Stadium and Perth’s Optus Stadium. It also built Australia 108, which is about 319 metres tall, and worked on Wembley Stadium in London and Dubai’s Emirates Towers.
Obayashi, Japan and Australia homes
2024 financial year rankings placed Multiplex seventh among Australia’s top 100 builders of homes, keeping it inside the country’s upper tier even as ownership has shifted offshore. That puts the builder in the same broad category as other major names that have already moved under Japanese control.
2024 brought a $115 million purchase that made Metricon Homes majority owned by Sumitomo Forestry, while 2021 saw NEX Building Group become majority owned by Asahi Kasei Homes. Those deals show the market Multiplex is entering: one where large Australian builders increasingly sit inside foreign groups with deep balance sheets and long investment horizons.
Multiplex and the Brisbane Olympics
One possible next step is the work Multiplex may pursue around the Brisbane Olympics, although the company has not said that it will do so. If it does, the sale positions Obayashi behind a builder with stadium experience and a record of major Australian venue delivery, from Sydney Olympic Stadium to Perth’s Optus Stadium.
For clients and competitors, the practical change is ownership, not the name on the hard hat. Multiplex stays in the Australian market, but its capital backing, strategic priorities and future bidding power now sit with Obayashi rather than Brookfield.
