Discount retail outlet Dress-Smart in Onehunga has been expanded and upgraded, with about another 1000sq m added.
Gaylene Powell, centre manager, said the work had been completed and Puma, Asics and Kathmandu would occupy the new areas.
The property is owned by Lend Lease Real Estate Partners New Zealand and managed by Oyster Group.
Restrooms have been renovated and new facilities include two disabled toilets and an additional, dedicated parenting room, Dress-Smart said.
Further new undercover carparking areas have been added too.