The Dublin Docklands Development Authority (DDDA) faces a legal bill of about €2.5m after losing a court case about its planning powers.
Seán Dunne's North Wall Property Holding Company won a court case against the DDDA when Ms Justice Mary Finlay Geoghegan ruled that the authority acted outside its powers in approving a development by Liam Carroll's company, North Quay Investments.
Legal sources said Dunne's legal bill will be over €1m and the DDDA will likely have to pay those costs.
Spencer Dock Development Company took a similar case which was settled, with the DDDA agreeing to pay SDCC's legal costs. Those are expected to be close to €1m, experts said.
The authority will also have to pay its own costs in both cases, meaning a bill of about €2.5m is possible.