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 Janice Atkinson. | theassessor@sonoma-county.org |
|---|---|
| Email regarding Business Property eFile Questions. | BusinessProperty@sonoma-county.org |
| 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 |
| Thu, Jan 1 | New Year's Day |
|---|---|
| Mon, Jan 19 | Martin Luther King Jr Day |
| Thu, Feb 12 | Lincoln's Birthday |
| Mon, Feb 16 | Presidents' Day |
| Mon, May 25 | Memorial Day |
| Fri, Jul 3 | Independence Day Holiday |
| Mon, Sep 7 | Labor Day |
| Wed, Nov 11 | Veteran's Day |
| Thu, Nov 26 | Thanksgiving Day |
| Fri, Nov 27 | Day after Thanksgiving |
| Fri, Dec 25 | Christmas Day |