"ates??? SIOR chapters. ???I am excited about this role,??? Steffner said. ???The SIOR chapters in the Southeast are some of the strongest in the country and are made up of the most successful commercial real estate brokers in Atlanta, Charlotte, Columbia, Nashville and Memphis.??? Like many local commercial real estate professionals, Steffner got his start in the business in 1985 with Trammell Cro" . . . .