Construction work is underway at the Quays Shopping Centre in Newry.
It's estimated that Phase 5 of the extension will cost in the region of twenty million pounds.
The building will be detached from the main complex with a bridge linking the two.
There will be six shops and three restaurants.
Construction will also include a multi-storey car park with 600 spaces, and new access for drivers via Drumalane Road.
The works are creating hundreds of new construction and retail jobs.
Woman rescued from house in Saintfield following petrol bomb attack
More than 100 firefighters tackle Omagh industrial fire as casualty airlifted
MLAs hit out at ‘Executive chaos’ after U-turn on special school summer schemes
Delivery driver forced at gunpoint to take object to police station
Elderly woman dies after road collision in Armagh