International Passive House Open Days 2025 (November 7–9, 2025)

The 2025 Fall International Passive House Open Days will take place this weekend, from November 7–9, 2025. Organized by the International Passive House Association, Passive House Network (PHN) and Passive House California (PHCA) the International Passive House Open Days offer a unique chance to explore Passive House buildings in California, across the U.S. and around the world. Tour projects, meet current owners, and experience first-hand what it’s like to live…


Windhorse Orchard: a Living Building Challenge and Passive House Renovation

This project in Sebastopol is nearing completion and we are excited to share some of the highlights with you. Kristin Nichols (Building Designer/Homeowner) and Spencer Dobrovolny (Builder) will present the project from their unique perspectives. We will dive into the design and construction processes of this exciting project.  We will look at what challenges we faced, how we approached these challenges, and share our successes and where we think we…