NAMA is to invest €20m in an extension to the Scotch Hall development in Drogheda.
The investment will create 150 construction jobs and a further 150 retail jobs when its completed.
The development will include an 8-screen cinema, a food court with five units, a retail complex and 300 additional parking spaces.
The deal for the development at the six year old shopping centre was agreed with Galway-based development company Edward Holdings.
Work is expected to start on the site early next year and is scheduled for completion by the third quarter of 2014.