The three-story Classical Revival Annex building extended the main building by five bays with its cornice heights, building materials, fenestration and organization of the facade closely matching the headquarters' exterior. The three-part main facade features a rusticated basement level, a first floor with large plate-glass windows framed by paired pilasters, and at the second and third levels, double and tripartite windows grouped between pilasters. Classical Revival details include terra cotta brackets and capitals, a modillion and dentil cornice, and elliptical windows. Historic fabric that remains intact on the interior of the building includes common bond perimeter brick walls, exposed floor joists, wood sub floors, wood baseboards, and window surrounds. Rehabilitations that took place from 1983 to 1984 and 1993 to 1994 have subdivided the once large open interior spaces into many smalls rooms on every level. A light well and skylight were also constructed on the east side of the building. The present use of the Annex is for housing homeless HIV-positive and AIDS patients that are receiving outpatient treatment at nearby Grady Hospital , as well as administrative offices.

The Coca-Cola Building Annex, 187 Edgewood Ave., is privately owned and not open to the public.