The declaration sets out the way the iwi intend to deal with each other that is based on respect for tikanga and the mana of each other.
Ngai Te Rangi chairman Charlie Tawhiao said Tauranga iwi were impressed with Ngati Paoa for the actions they were taking and for the mana enhancing pathway they have set in place.
"This is the way that iwi should be dealing with each other, with honesty, integrity and with good intent for each other," Tawhiao said.
"In cross-claims processes, we have reached the end of the usefulness of the legal process that is by nature adversarial and able to be misused."
Tawhiao said traditional systems of dispute resolution based on respect for the mana of each iwi or hapu and other relations were needed.
He said marae had been the centre of tribal diplomacy for hundreds of years and it was vital tried and true processes were used.
"We need to recognise that the legal processes should be there to support what comes out of discussion on marae, not dictate whether we can speak to each other."