communications 21 (c21) recently purchased new office space in the city's historic Inman Park community. c21's new 5,000-square-foot loft office condominium, located in the Blue Horse building, will allow the company to grow to its goal of 15 employees within the next few years. The office space, part of the Inman Park Village redevelopment effort, is located in a two-story building originally occupied by Atlanta's Montag Brothers Paper Company.