Welcome to Solar Knights!

Excellence in Sustainable Construction

Serving Northern California, PassivWorks delivers quality construction while implementing the latest sustainable building practices. Specialties include:

Passive House Construction:  This standard has become our baseline for building near-zero, net-zero and carbon-neutral structures in a cost effective manner.  Rick Milburn was the first builder in California certified by the Passive House Institute U.S. (PHIUS) and is leading the way in many groundbreaking low-energy techniques. Learn more

Custom Buildings:  Rising to meet the needs of even the most demanding customers, we have sixteen years of built projects and satisfied customers throughout Northern California. Learn more

Integrated Renewables: PassivWorks is a certified solar installations professional specializing in Grid-Tied Photovoltaics and Solar Thermal. We use renewables in our Passive Houses to offset the minimal electrical loads needed for lights, mechanical system, etc. bringing your building to net zero energy.

Our goal is simple - to be the best at what we do!

With a lifelong interest in high quality workmanship, I felt the need to do all phases of substantial renovations on three houses without contractors or 'subs'. Now, thirty five years later, I've found a person who does excellent work and is very capable, honest, and conscientious.
Tim S., Homeowner, Napa, CA
Rick Milburn and PassivWorks have worked on various construction projects for Antinori California over the last 9 years. Rick has assisted us with remodeling an old farm house located on the wine estate, to constructing the Antinori Family’s Napa Valley residence, to overseeing construction modifications to our winery.
Glenn Salva, Antinori Winery, Napa, California