A second attempt is to be made to secure planning approval to redevelop the State's oldest shopping centre at Stillorgan, Co Dublin. The previous plan by owners Castlemarket Holdings was rejected by An Bord Pleanala. The new scheme designed by Gilroy McMahon Architects provides for a gross development of 621,000 sq ft, including a gross retail area of 231,434 sq ft and an integrated car-park with 890 spaces on the various levels. The overflow car-park on Lower Kilmacud Road does not form part of the planning application. The centre currently has 63 retail outlets with a lettable space of 140,000 sq ft. The £50 million redevelopment will include a four-storey over double level basement extension and the refurbishment of existing units and malls. Tesco and Dunnes will continue as the main tenants and a third anchor store of 45,000 sq ft on two levels will be aimed at multiples such as Marks & Spencer.

Two of the anchors will be located at street-front corners of the site. The additional retail space will be primarily single storey, the exception being the new anchor store with two levels of retailing along the Dublin Road side. The previous plan to redevelop the centre was approved by Dun Laoghaire-Rathdown council but later turned down by An Bord Pleanala on the grounds that the scheme would "tend to create serious traffic congestion" because of a deficient road network in the area. It also said that "large-scale" additional retail space proposed "does not take sufficient account" of a 1982 ministerial policy directive on shopping centres, which referred to the adequacy of existing shopping facilities as a relevant consideration.

Castmarket Holdings, in which Treasury Holdings holds a 50 per cent interest, bought the centre in 1996 for £38 million. It was first opened in 1966 but has become quite dated in recent years.