PassivWorks built the first Certified Passive House™ in California and the first Certified Passive House™ retrofit in the United States. This house was the Historic “O’Neil House” in Sonoma. Overview: Located just blocks off the plaza in historic downtown Sonoma, PassivWorks has built the first Certified Passive House™ in California and the first Certified Passive […]

Built in the certified Passive House standard, these two buildings in Sonoma (the main house and the barn-inspired work studio) are custom built for California comfort across a sprawling estate, and are on the cutting edge as far as energy, heating and cooling efficiency. Connect with the Passivworks Team! We’d love to hear about your […]

Casa Mirasol is a Spanish style, open floor plan kitchen, dining and living room, with two spacious bedrooms and sliding barn door closets, bathrooms and hidden home office. It is a true Passive House (very well-insulated, virtually air-tight building that is primarily heated by passive solar gain and by internal gains from people, electrical equipment, […]