Cinema group Ster Century and retailer lobby group RGData have objected to plans for an expansion of Liffey Valley shopping centre in west Dublin by Cork developer Owen O'Callaghan and the Duke of Westminster's property firm Grosvenor.

O'Callaghan has said he wants to proceed with the expansion as quickly as possible, but their vehicle Barkhill has also objected to the conditions of planning imposed by the local authority. They include that Barkhill will have to pay more than €22m towards Metro West and in other levies as part of the planning permission granted for a hypermarket and extension of the shopping centre.

An Bord Pleanála will now have to rule on whether the plan should go ahead. O'Callaghan has said that funding for the €500m expansion is in place.

If approved the extension will include up to 60 new shops and the developers say it will create up to 4,000 jobs. The local authority has told Barkhill that it will have to provide "affordable start-up retail units as part of the proposed development".

RGData has fears over the effect the expansion will have on local businesses while Ster Century believes that the design and the fact the project is to be developed in phases "may in fact frustrate or prejudice" the delivery of a local area plan.

The existing shopping centre is owned by Aviva and Grosvenor and is currently in the process of being sold to Area Property Partners and FC Reit Asset Management.