The Certified Values by Tax Base report provides current year assessed valuation (by tax code) of real and business property subject to property taxation. A tax code is a number assigned to identify a unique taxing jurisdiction or debt service fund. Please note: the value figures on this report exclude Unsecured Aircraft value. The report with this additional value included (used for calculating ad valorem taxes only) is available upon request, please contact ACTTC-PropertyTax@Sonoma-County.org. A revised report will be available at the end of July each year to include state assessed utility value.
Certified Values by Tax Base Reports
2025-26 - Excluding State Utility Value (PDF: 108.2 KB)
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