Washington Flats is located in the old northwest section of Davenport, Iowa, United States. It has been listed on the National Register of Historic Places since 1984.

Washington Flats is a local expression of the urban row houses that were built after the mid-19th century in Davenport. It was designed in a simplified Neoclassical style that was typical of many structures built in the city around the turn of the 20th century. The building is a long two-story brick structure with four double entrances into the apartments across the front of the building. A bay window with a fifth entrance is in the center of the building. The porches with shared entrances have partial cornice returns. They also have a screen with wood cut-outs between each doorway. The building features a corbelled brick belt course, and egg-and-dart molding on the facia of the metal cornice.