When Justin Sullivan and Christine Ju stumbled upon this house in Cleveland Park neighborhood of Washington, DC, it was in clear need of an update. "It only had one bathroom, a kitchen that hadn't been touched since the 60s, and a small backyard that had become overgrown with weeds and had a rusty chain link fence," Sullivan says. It was originally 1,800 square feet, but the couple expanded it to 2,400 with the addition of a basement.