The Government, developers and private investors all own properties on sites in Ballsbridge that city management favour rezoning from offices to mixed use in a move that could promote high-rise buildings.
The Government owns Lansdowne House on the corner of Lansdowne and Northumberland roads, the site marked A on the local authority's map.
Builder and investor Bernard McNamara owns Carrisbrook House, the site marked B on the map, which is on the junction of Pembroke and Northumberland roads.
Mr McNamara has been the most active purchaser of Dublin property in recent years, recently paying €288 million for the Burlington Hotel, joining forces with the Dublin Docklands Development Authority and the financier Derek Quinlan to pay €412 million for the 24-acre Glass Bottle site at Ringsend.
Developer Seán Dunne's Mountbrook Homes is one of the biggest landowners in the area. He paid €379 million in total for Jury's Hotel/Towers/ Berkeley Court site in 2005, most of the area marked C on the map.
He also has interests in parts of the Sweepstakes office complex, marked G, and the AIB bank centre, H.
Developer Ray Grehan paid almost €84 million an acre for the old Veterinary College site, which he bought for €171.5 million in 2005. This used to belong to the State, and includes part of area C and D on the map.
Texaco House, an office block on Pembroke Road, next to the US Embassy, is owned by a number of groups of private investors, but there is no dominant stakeholder.