Why PassivWorks?

Possessing an exacting standard of excellence in everything we do, we built our reputation on constructing fine custom homes and quality buildings in Napa and Sonoma counties. Here's what you can expect from your PassivWorks job:

  • Strategic thinking
  • Custom solutions
  • Deep technical knowledge
  • Meticulous attention to detail
  • Cost efficiency and control
  • Schedule adherence
  • Quality assurance
  • Safety
  • Clean job sites
  • Accountability
  • Professionalism
  • Integrity
  • Great collaborative partners

Passive House

While the Passive House Standard has been practiced in Europe for about 20 years, it has only recently made its arrival to the US. PassivWorks's Rick Milburn is the first builder in California to attain certification by the Passive House Institute U.S. (PHIUS).  In October 2010, he put his knowledge to the test and completed the first Certified Passive House™ retrofit in the United States and the first Certified Passive House™ built in California.  To learn more about this exacting building standard, read on

Custom Buildings

Because no two projects are alike we offer custom solutions to our discerning clientele.  We love a challenge and the opportunity to solve even the most complex building issues. Contact us for an estimate

Renewable Energy

The best time to "go solar" is now. Rebates will never be higher and will only decline as more megawatts are reserved over time. With advanced certification in Grid-Tied Photovoltaics, Solar Thermal and experience navigating the rebate process, PassivWorks is the natural choice for your solar installation whether it's a small household system or large commercial array.


It's never been a better time to build sustainably.  At both the state and federal level there are big tax advantages to empower property owners.  Learn more