Budget Breakdown: A Family Builds a Tiny ADU for $46K—and You Can Purchase the Plans

Sarah Yeon is attached to her family’s Fairfax, Virginia, home. She and her husband, Abraham, bought it when they moved from South Korea in 2009 and raised their three children here. But more recently, after being locked down in the ranch-style residence during the pandemic with the kids, two of them now in their 20s and one heading into high school, she realized that they all needed more space. Buying a bigger house had crossed her mind, "but I loved my neighborhood and neighbors; I wanted to stay," she remembers.