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Welcome to the Napa Sonoma ADU Center! Learn more about us →

The mission of the Napa Sonoma ADU Center is to help homeowners build ADUs.

We began our work to launch the ADU Center by conducting a series of surveys, data gathering, and focus groups with city and county staff, builders and architects, as well as homeowners who have built ADUs or are interested in building one in the future.

Watch our Calistoga ADU Webinar!

Well, we are making it possible for homeowners across Napa and Sonoma counties to connect directly with local Planning & Building Department, with our brand new ADU webinar series which just launched with an engaging live webinar in collaboration with the terrific folks at the City of Calistoga’s Planning & Building Division.

Sign up for an ADU Feasibility Consult!

Figuring out where to even begin with a major construction project like an accessory dwelling unit can be a little overwhelming — and that’s why we launched our new ADU Feasibility Consults program.

Let’s build a bright future for our community

Getting started on your Accessory Dwelling Unit can be a daunting undertaking, and studies show that the average homeowner can spend a couple of years just thinking about their ADU before even beginning the planning process. That’s why when it comes to ADUs, I like to say “There’s no time like the present!”

February News from The Napa Sonoma ADU Center

With Valentine’s Day on the horizon, I’ve been doing some thinking about love. Specifically, I’ve been thinking about how we can foster a sense of community, mutual aid, and love during a time when our neighbors, families, and friends here in Napa and Sonoma Counties are struggling with the double-punch of a global pandemic and the subsequent economic implications.

December News from the Napa Sonoma ADU Center

2021 brought its share of tribulations to our community, and yet each day we hear from new homeowners like you who are ready to invest in building an accessory dwelling unit that will provide a roof over the head of a friend, family member, or neighbor in need of a home.

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