The High Court has ruled that Dublin Docklands Development Authority acted outside its powers in deciding that a €200m development did not need planning permission.
The certificate exempting the development by North Quay Investment Limited was quashed by the court in an action by developer Sean Dunne.
Ms Justice Mary Finlay Geoghan said an agreement between DDDA and North Quay Investments to give land for public use in return for the exemption gave rise to a 'reasonable apprehension of bias'.
The action was taken by Mr Dunne and his North Wall Property Holding company against the Dublin Docklands Development Authority over the decision, which was taken in July 2007.
The NQI project surrounds development lands owned by Mr Dunne.