2003 Te Runanga o Ngati Porou (now Te Runanganui) supported applications by hapu to the Maori Land Court to have the foreshore and seabed in the Ngati Porou rohe declared Maori customary land. The Court of Appeal’s Ngati Apa decision is released. The Government announces its intention to introduce the Foreshore and Seabed Act.
2004 On 1 November, the Crown and TRONP entered into negotiations. Te Whanau a Apanui also joined the negotiations at this time. Dr Apirana Mahuika and legal counsel Matanuku Mahuika were appointed to negotiate the agreement for Ngati Porou. The Foreshore and Seabed Act is enacted in late November.
2005 TRONP undertook a mandating exercise at the end of 2005 to ask nga hapu o Ngati Porou if they supported TRONP to continue to facilitate negotiations. Forty hapu agreed to mandate TRONP and 11 hapu choose not to support.
2008 On 7 August 2008, nga hapu o Ngati Porou and the Crown entered into the Deed of Agreement which was initialled by Dr Michael Cullen and Dr Apirana Mahuika. On 31 October the Deed was consequently ratified and signed by 48 hapu. Earlier, on 29 September, the Nga Rohe Moana o Nga Hapu o Ngati Porou Bill was introduced to Parliament. However it was delayed after a change in Government, and the National Party and the Maori Party agreed to review the Foreshore and Seabed Act.
2009 On 1 July, the Attorney General released the findings of the review of the Foreshore and Seabed Act in a report titled Pakia ki uta, Pakia ki tai which concluded that the Act was discriminatory and should be repealed. Ngati Porou subsequently agreed to extend the period for implementation of the Deed of Agreement.
2010 On 14 June, the Government announced its intention to repeal and replace the Foreshore and Seabed Act. On 6 September, the Marine and Coastal Area (Takutai Moana) Bill was introduced to Parliament and passed its first reading on 15 September 2010.
2011 On 31 March, the Marine and Coastal Area Bill received the Royal Assent after being passed through the House of Representatives.
2012- 2016 In light of the law change, Te Runanganui and the Crown begin reviewing the Deed of Agreement and considering the changes required to update the Deed.
2016 Te Runanganui, in consultation with the Nga Hapu o Ngati Porou Foreshore and Seabed Sub-commitee, negotiates the final text changes to the Deed of Agreement. A ratification process is held for nga hapu o Ngati Porou to approve the changes to the Deed.