California Property Tax Assessors

Sonoma County, California Tax Assessors' Office

Sonoma County Assessors Phone Number
Sonoma County Assessor
585 Fiscal Drive, Suite 103F
Santa Rosa, California 95403
Sonoma County Assessors Fax Number 707-565-3317 (Fax)

Where is the Sonoma County Tax Assessor's Office?

The Sonoma County Tax Assessor Office is located at 585 Fiscal Drive, Suite 103F in Santa Rosa, California.

What can the Sonoma County Assessor's Office do for me?

The Sonoma County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Sonoma County.

Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.

Submitting a Sonoma County property tax appeal

If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.

You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.

If you would like to appeal your property, call the Sonoma County Assessor's Office at (707) 565 1888 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.

For more information and example appeals, see how to appeal your property taxes.

Useful Sonoma County Facts:

The median home value in Sonoma County is between $518,599.00 and $530,201.00. Property tax rates are based on property values.

How can I contact Sonoma County?

You can try contacting the Sonoma County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.

The county seat for Sonoma County is located in the in Santa Rosa, which is located at 575 Administration Drive. You can direct your general inquiries to Sonoma County with the contact info listed below.

Sonoma County Phone Number


Sonoma County Address

575 Administration Drive
Santa Rosa, CA 95403-2815

Useful Sonoma County Links:

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