Treasury Holdings has been granted planning permission to develop its €800m (£758m) Spring Cross scheme in Ballymun Town Centre in North Dublin.
Treasury hopes construction will start in 2009 with completion due in 2012.
Niall Kavanagh, director of development at Treasury Holdings Ireland, said: 'This is an attractive development and there has been strong retailer interest, even before we secured planning permission.
'This is due to the unique nature of the new town which will be home to 40,000 people when complete.
'There are a number of factors attracting interest including the developments strategic location in the heart of north Dublin, its accessibility to the airport and major motorways as well as the metro stop which will be integrated into the development. '
The development is based around an open street scheme.
The 14.5 acre site includes 645,840 sq ft of retail space, 301,392 sq ft of office space and more then 118,404 sq ft of leisure facilities including an 11 screen cinema and bowling alley and 367 residential units