Drinking lemonade. Dangling from a tire swing. It was this sense of summer and nostalgia that designer Erin Martin sought to create at the Sonoma home of a couple with three young children. Her partners in this dreamy endeavor included Ken Linsteadt Architects and David Rathbun of landscape firm AquaTerra. The goal—bring a sleepy property back to life by renovating the home and linking it to the outdoors, which includes about 8,000 sq. ft of new hardscaping with a outdoor kitchen, pool house, children’s playhouse, and firepit.