The McCormick Apartments consists of four stories, a mansard, and a raised basement. The entrance bow faces the intersection of Massachusetts Avenue and 18th Street, and the building measures about 80 feet, including the bow, along the five-bay…

The house was designed for Commodore Stephen Decatur who was at the height of his naval career when the house was constructed, and he and his wife, Susan Wheeler Decatur, wished to establish themselves in Washington society. The Decaturs lived on…