[California Assessors]

Sonoma County, California - Assessor's Office

The Sonoma County Assessor is responsible for appraising real estate and assessing a property tax on properties located in Sonoma County, California. You can contact the Sonoma County Assessor for:

  • Information on your property's tax assessment
  • Checking the Sonoma County property tax due date
  • Your property tax bill
  • Paying your property tax
  • Reporting upgrades or improvements
  • Appealing your property tax appraisal

575 Administration DriveThe Sonoma County Assessor's Office is located in Santa Rosa, California. Santa Rosa is the county seat of Sonoma County, where most local government offices are located.

Sonoma County Assessor Contact Information

Additional Sonoma County Information

Sonoma County Assessor's Office Services

There are three major roles involved in administering property taxes - Tax Assessor, Property Appraiser, and Tax Collector. Note that in some counties, one or more of these roles may be held by the same individual or office. For example, the Sonoma County Tax Assessor may also serve as the Sonoma County Tax Appraiser.

  1. The Sonoma County Tax Assessor is responsible for setting property tax rates and collecting owed property tax on real estate located in Sonoma County.
  2. The Sonoma County Property Appraiser is responsible for determining the taxable value of each piece of real estate, which the Tax Assessor will use to determine the owed property tax.
  3. The Sonoma County Tax Collector is responsible for collecting property tax from property owners. They issue yearly tax bills to all property owners in Sonoma County, and work with the sheriff's office to foreclose on properties with delinquent taxes.

When contacting Sonoma County about your property taxes, make sure that you are contacting the correct office. You can call the Sonoma County Tax Assessor's Office for assistance at 707-565-1888. Remember to have your property's Tax ID Number or Parcel Number available when you call!

If you have documents to send, you can fax them to the Sonoma County assessor's office at 707-565-3317. Please call the assessor's office in Santa Rosa before you send documents or if you need to schedule a meeting. If you have general questions, you can call the Sonoma County government at 707-565-2241.


Learn More

Find the tax assessor for a different California county

Find property records for Sonoma County

The median property tax in Sonoma County, California is $3,160.00


california Property Tax Data All of the Sonoma County information on this page has been verified and checked for accuracy.
If any of the links or phone numbers provided no longer work, please let us know and we will update this page.