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Tax Payer Information

On this page you will find information for New Owners, information about Tax Payer rights and a link to the Assessors' Change of Mailing Address form.

If you can not find the information you are looking for in this category please refer to the Property Tax FAQs or contact the Tax Collector at (707) 565-2281 or at

Ownership Changes Backlog

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