The celebrity chef, who currently operates eight Steakhouse Bar & Grill sites, has put his name to the £13.75m development opening in autumn 2016.
The new four star boutique Hotel Indigo, part of InterContinental Hotels Group (IHG), will be managed by Redefine|BDL.
“This is a really exciting development in one of the fastest growing hotel markets in the UK, well located in the vibrant city centre of Cardiff and able to take advantage of the growing commercial activity of the Welsh capital," said Ramsay Duff, investment director at Maven, who secured the deal.
White's restaurant empire is continuing to expand, and work has already begun on a ninth Steakhouse Bar & Grill opening at Marriott’s Threadneedles Hotel.
The chairman of the franchising brand behind the chefs’ New York Italian and Steakhouse Bar & Grill concepts told BigHospitality last year that he expected the business to grow to 50 sites over the next five years.