Planning fallacy
The Sydney Opera House was expected to be completed in 1963. A scaled-down version opened in 1973, a decade later. The original cost was estimated at $7 million, but its delayed completion led to a cost of $102 million.
Lendlease Group
Previous works include the Adelaide Oval upgrade finished in 2014, and the Sydney Opera House, completed in 1973 where Lendlease were the principal contractor.