Backyard of a townhouse in South Seattle Size: Overall yard is 36 feet (11 meters) long and 15 feet (4.6 meters) wide; deck space is 17 feet (5.2 meters) by 15 feet (4.6 meters) and patio is 19 feet (5.8 meters) by 15 feet (4.6 meters) Purpose: To extend the square footage of the house by enhancing the outdoor living area.