The development, on the Bandon Road, will include a medical campus, a hospice and a centre for Enable Ireland/the Lavanagh Centre.
Outline planning permission for the project is to be sought within weeks on up to 60 acres of land at Garrandarragh, behind Dunnes Stores, and includes a park-and-ride facility and hundreds of houses.
Although the development contravenes the county plan, council management and some councillors are backing it.
Beacon Court Group, a private hospital company with a facility at Sandyford in Dublin, is leading the proposal.
The other key elements may be the Lavanagh Centre/Enable Ireland, and St Patrick’s Hospital/Marymount Hospice.
Marymount chief executive Kevin O’Dwyer has confirmed the intention to sell the St Luke’s Cross hospice, St Patrick’s. He said a move to the Bandon Road green-field site, subject to planning permission, may suit, but other sites are also being examined.
The Lavanagh Centre, in Ballintemple, also plans a move to the Bandon road campus, to a five-acre site.
Beacon Court, headed by developer Paddy Shovlin, businessman Michael Cullen and cardiac surgeon Prof Mark Redmond, is keen to locate at the medical campus.
The massive plan has been quietly pieced together over the past 18 months, with Marymount the last cornerstone of the project. The hospice currently has 24 beds, but at least 44 are needed. A sale of the current building with two undeveloped acres could realise around €10m.
Land owner and proposer is James G O’Mahony, a solicitor with a property background, who acquired the lands at Garrandarragh, Bandon Road, in the late 1990s.
Property adviser is Darragh Taaffe of Keane Mahony Smith.
Approximately 16 acres of the land is zoned for housing, and could facilitate 300 houses.
The land for a Lavanagh Centre is being donated free of charge by Mr O’Mahony.