Waikato-Tainui's commercial arm is welcoming news that Ports of Auckland plans to expand, saying it will be good for its own developments and the country's growth.
Tainui Group Holdings has its own designs for an inland port at Ruakura in Hamilton - a move which has been long signalled.
Chief executive Mike Pohio supports the proposed 250m expansion of the port into the Waitemata by 2055.
In March, the port company wants the Auckland Council to "lock in place" a coastal zone allowing it to expand its waterfront from 77ha to 95ha.
"A port that is congested with containers on site runs the risk of a declining productivity," Mr Pohio said.