Contact Us

The Sonoma County Assessor's Office is open Monday through Friday, 8 am to 5 pm. Please note our holiday schedule below.

Si necesita assistencia en Español favor de llamar a la oficina 707-565-6075 entre las 8:00 am y 5:00 pm de Lunes a Jueves.

Email • Correo Electrónico

Email Janice Atkinson. theassessor@sonoma-county.org
Email regarding Business Property eFile Questions. BusinessProperty@sonoma-county.org

Telephone Numbers • Números de Teléfono

707-565-1888 Assessor Main Office: Information
707-565-6075 Información en Español (Lunes a Jueves)
707-565-3317 Assessor Main Office: Fax
800-244-1034 Assessor Main Office: Toll Free in Sonoma County
707-565-1330 Assessor Business Property: Information
800-797-4707 Assessor Business Property: Toll Free in Sonoma County
707-565-1886 Homeowner Exemptions
707-565-2861 Aircraft Assessments
707-565-2844 Boat Assessments
707-565-1888 Real Estate Assessments

2007 Holidays Observed: Offices Closed • Las Feriados Observados

Mon, Jan 1 New Year's Day
Mon, Jan 15 Martin Luther King Jr Day
Mon, Feb 12 Lincoln's Birthday
Mon, Feb 19 Presidents' Day
Mon, May 28 Memorial Day
Wed, Jul 4 Independence Day
Mon, Sep 3 Labor Day
Mon, Nov 12 Veteran's Day
Thu, Nov 22 Thanksgiving Day
Fri, Nov 23 Day after Thanksgiving
Tue, Dec 25 Christmas Day