BROOMFIELD - Mrs. Fields Cookies announced Tuesday it plans to join its sister company TCBY in opening a flagship store, franchisee training center and test kitchen in the Arista mixed-use development in Broomfield.

Construction will begin this month and is expected to be complete in time for an opening date in March.

Next year will be an important one for Mrs. Fields Cookies, as it plans a company relaunch with new products and store designs.

"This new location will be a great addition to the emerging development taking place at Arista Place," chief executive Tim Casey said. "Mrs. Fields is an iconic brand and we feel that Arista is a great place to debut our new look, including the addition of innovative products, brand imagery focusing on the 35-year history and a unique retro design, all of which are key components included with the concept's 2013 brand re-launch program."

The new Mrs. Fields Cookies store will be owned and operated by Mrs. Fields Famous Brands, LLC, doing business as Famous Brands International, which also owns the TCBY frozen-yogurt brand. TCBY announced last week it would open similar facilities in Arista.

Famous Brands International relocated its headquarters from Salt Lake City to Broomfield in July.  Its headquarters occupies the entire sixth floor at Arista Place and employs more than 35 people.