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Property Tax Frequently Asked Questions

This page answers frequently asked questions related to property taxes and collection.

Due to an extraordinary number of ownership changes, the Sonoma County Assessor’s Office is experiencing a significant backlog processing these changes. If you received a tax bill for a property you no longer own, please write “sold” on the bill and return it to our office. Should you need additional assistance please reach out to our office at (707) 565-2281 or

Secured Property Taxes

Supplemental Taxes

Delinquent Taxes

Exemptions and Assistance Programs

Mobile Homes