The Northern Kaipara sub tribe Te Uri o Hau, has signed a new memorandum of understanding (MoU) with the Northland Regional Council.
The hapu's chief executive, Deborah Harding, says it updates the original one to which both parties agreed, following a recommendation from the Office of Treaty Settlements in 2003.
She says it's a significant milestone that will bring a variety of environmental, economic and social development benefits.
Ms Harding says the new MoU will mean more regular contact between the hapu and the council, and avoid surprises about council decisions that have challenged the relationship in the past.
Northland Regional Council chief executive Malcolm Nicolson says the memorandum provides a way for the council to better support the subtribe's objectives.