Published Friday, 17 February 2012
It follows meetings of the Ulster Council and the GAA's National Management Committee.
The sporting body says a letter from Stormont has confirmed an offer of £61.4m to invest in a new 40,000 seated capacity stadium at Casement.
It says the next phase will be appointing a design team, hoped to be in place by July, and begin engaging with the local community over the project.
Ulster GAA President Aogan Ó Fearghail said: "This was an important decision for the Ulster Council and the GAA at Central level and I am delighted that we have received approval and endorsement from both bodies.
"The unanimous acceptance of the letter of offer is a significant milestone in both the Casement Park redevelopment project and the ongoing implementation of the Ulster GAA Strategic Action Plan and Vision.
"I want to recognise and thank the Minister for Culture, Arts and Leisure Caral Ni Chuilin MLA, First Minister Peter Robinson MLA and deputy First Minister Martin McGuinness MLA MP for their confidence in and ongoing support for Ulster GAA as we begin a new and exciting stage in the development of Casement Park."
Welcoming the announcement, west Belfast MLA Pat Sheehan said he hopes it can bring a much-needed boost to the area.
"It will be a huge boost for the GAA in the city and Co Antrim and will bring longer term and wider economic benefits to an area in much need of investment," the Sinn Féin representative said.
"West Belfast has suffered from many years of neglect including under investment. Hopefully the construction contractual arrangements for this development will include measures to address long term unemployment in this part of the city."
© UTV News