Maryland is quietly turning single-family properties into two-home lots. By October 1, every Maryland jurisdiction with zoning authority must authorize accessory dwelling units—or ADUs—on qualifying properties with detached homes. These aren’t just backyard sheds. An ADU could be a basement apartment, garage conversion, attached addition or an entirely separate backyard house measuring up to 75% of the primary home. A 2,000-square-foot house could potentially support another 1,500-square-foot dw