The Hellman Building is a six story building which features 104 loft units including 2 penthouses. Ceiling heights are up to 18 feet. The top floor units have walk-up loft areas.

The earlier building at 403-411 South Main Street is a six-story stone and architectural tile commercial structure with classical decor. Paneled jambs, scroll brackets, and a corbelled cornice frame the recessed entry. Above a stringcourse, the gray stone body of the building continues the four bay division, with a single window in each story above the entry bay, and paired windows in the remaining bays.

Bosses accent the fifth floor lintels, above which a spiral molding spans the facade. The top floor bays are punctuated by terracotta tablets and roundels in the red stone piers. Dentils, corbels, a fluted frieze, and a cornice cap the building. The second building ground floor bays are defined by paneled pilasters with stylized capitals. An entry detailed like the one on Main Street occupies the next bay while a second entrance, capped by a classical entablature, is in the fifth bay from the west. The design of the fifth floor cornice on the Main Street building is repeated, accented with brackets and corbelling over the penultimate east bay.