Thinking about an ADU? Schedule your personal consultation

Contact Us

We’re a nonprofit here to help Napa and Sonoma County homeowners with their accessory dwelling unit questions.

Check the information below for your best contact – Resource Center staff and/or local Planning and Building staff are the best resource for up-to-date information about ADUs, your property, and what rules you may need to follow.

If your community is a Napa Sonoma ADU member:

Start by contacting the Napa Sonoma ADU Resource Center for expert advice on your ADU project. 

Option 1: If you’re ready to talk about your specific project, schedule a consultation.

Option 2: Get in touch via email at info@napasonomaadu.org or using our contact form below.

Local Contacts:

If your jurisdiction is not a Napa Sonoma ADU member, contact them directly using the contact information below:

City of American Canyon

Brent Cooper, bcooper@cityofamericancanyon.org 

Taresa Geilfuss, tgeilfuss@cityofamericancanyon.org 

Tom Trimberger, ttrimberger@interwestgrp.com 

William He, whe@cityofamericancanyon.org

Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.

City of Calistoga

Building Division: building@ci.calistoga.ca.us

Planning Division: planning&building@ci.calistoga.ca.us

Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.

City of Cloverdale

Rafael Miranda, rmiranda@ci.cloverdale.ca.us

Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.

City of Cotati

Cotati Community Development Department, 707-665-3635, planner@cotaticity.org

Disclaimer: standards and process may vary. Consultation with City staff is recommended before starting any project.

City of Healdsburg

Planning Division: Planning@healdsburg.gov
Building Division: Building@healdsburg.gov
Phone: 707-431-3348

City of Napa

Michael Walker, mwalker@cityofnapa.org
Michael Allen, mallen@cityofnapa.org
Ryder Dilley, rdilley@cityofnapa.org
Paul O’Neill, poneill@cityofnapa.org
Angela Alvarez-Cendejas, acendejas@cityofnapa.org

City of Petaluma

Community Development Dept., petalumaplanning@cityofpetaluma.org

City of Rohnert Park

Susan Azevedo, sazevedo@rpcity.org
Jenna Garcia, jgarcia@rpcity.org

City of Santa Rosa

Front Counter Planner, planning@srcity.org

City of Sebastopol

John Jay, jjay@cityofsebastopol.org
Kari Svanstrom, ksvanstrom@cityofsebastopol.org

City of Sonoma

Kristina Tierny, Associate Planner, ktierney@sonomacity.org

City of St. Helena

Maya DeRosa, mderosa@cityofsthelena.org
Aaron Hecock, AHecock@cityofsthelena.org

City of Windsor

Kim Jordan, kjordan@townofwindsor.com
Kim Voge, kvoge@townofwindsor.com
Kevin Locke, klocke@townofwindsor.com
Jennifer Sedna, jsedna@townofwindsor.com

City of Yountville

Kyle Johnson, kjohnson@yville.com
Diane Levine, dlevine@yville.com

County of Napa

Affordable ADU Program, Forgivable ADU Loans: https://www.countyofnapa.org/3424/Affordable-ADU-Program-Forgivable-Loan-O
Trevor Hawkes, trevor.hawkes@countyofnapa.org
Jennifer Palmer, jenifer.palmer@napacounty.org

County of Sonoma

Planning Department, planner@sonoma-county.org
Katrina Braehmer, Katrina.Braehmer@sonoma-county.org

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