Tall at nine stories (plus basement) and slender at 25-feet-wide, the front facade of the 14th Street Annex, designed in an exuberant Beaux-Arts style and arranged in a tripartite base-shaft-capital composition, features a rusticated three-story base with a large round-arched window at the second story, classically-inspired carved detailing, balconies, a four-story midsection with decorative ironwork, a colonnaded upper section, and large copper acroteria at the roof.