The owners of 100 Mill Point Road are suing Hanssen over allegations its "negligence" on Finbar's Aurelia project led to a basement flood that displaced tenants.
Finbar Group managing director Darren Pateman has played down concerns about water egress at the construction site of its $404 million twin tower Civic Heart apartment development.
One day after the federal government's so-called union-busting laws failed to pass the Senate, the CFMEU has sought to turn the focus on construction boss Gerry Hanssen whose company was fined in the Federal Court today.