Washington Square Homes are located in the 45403 zip code area. Washington Square Homes, located on the east side of Dayton, are built with all of the luxuries you’d expect to find in an upscale home, at an affordable price. You can choose from one of several different floor plans which feature three or four bedroom homes that include a two-car detached garage and energy-efficient electric heat. Quality, good taste, extraordinary features, and a convenient location make your first impression a lasting one. No matter where you work or play, living at one of our Dayton Single Family Home communities makes it easy to get there.