21 Kingman Road is a 2 1/2 story, 5 bay, rectangular plan, Mediterranean Revival/eclectic, brick, residential building. Constructed c. 1920, the masonry building has a clay tile-clad hipped roof with hipped and polygonal dormers, and wide overhanging eaves with exposed rafters. The dormer windows feature diamond-paned casements. Other architectural details include a square column-supported partial porch, an entrance flanked by leaded glass sidelights, and full arched, first floor, window surrounds.