The eastern side of Colonel's Row contains eight individual officers' quarters numbered 403 from north to south, which initially faced the original shoreline southwest of Hays Road. The first structures to be built, buildings 405–408, were designed in accordance with the same Quartermaster General plans, and were built in 1893-1895 as two-family duplexes. This was followed by buildings 403–404, built in 1904-1906 also to the same plan. The two-and-a-half-story building 409, a Colonial Revival structure, was designed as Bachelor Officers' Quarters and was completed in 1910, while building 410 was built as a duplex officer's quarters in 1917 and is the only structure of the Modified Arts and Crafts design on the island.