The first building of the Mueller Business District, a planned four-building, 795,000-square-foot office development, broke ground Dec. 17. Developer Shorenstein Properties and commercial real estate broker Aquila are calling the initial location the Alpha Building. It will be located at 1900 Aldrich St. and will include 210,500 square feet of office space along with 26,000 square feet of retail on the ground floor. Opening is scheduled for early 2021. www.muellerbusinessdistrict.com