Room 4W was subdivided during the San Juan occupation. The stratigraphic sequence identified in the room contained 15 strata, including structured trash, roof-fall, occupational fill, and two floor surfaces. Lower strata in the room were clearly of Chacoan age, but the upper four strata were mixed, with ceramics from both the Chacoan and San Juan occupations. Three features, including two doors, were in Room 4W. Based on the masonry style and construction techniques in evidence, Room 4W was built during the same interval as the rest of the pueblo from 1090–1100.