How to appeal a Tuolumne County, CA property assessment
✓ Verified — Last verified October 25, 2026
Filing details published for Tuolumne County. Match the notice and assessment cycle to the official instructions.
Official appeal instructionsNot tax or legal advice; confirm with your county.
Filing timing
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Instructions based on your notice
Regular annual-roll appeals: July 2 through November 30. Supplemental assessments have a separate notice-dependent deadline. Source
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Where to file
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Clerk of the Tuolumne County Board of Supervisors Source
Officially published
Official appeal page
Go to the county’s appeal page
www.tuolumnecounty.ca.gov
SourceOfficially published
Official offices
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Kaenan Whitman Source
Sources for these instructions
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Read the source quotations (11)
https://www.tuolumnecounty.ca.gov/732/Decline-in-Value-Assessment-Appeals
Applications regarding the annual assessment roll must be filed with the Clerk of the Board of Supervisors between July 2 and November 30.
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https://www.tuolumnecounty.ca.gov/tax
The first installment is due Sunday, November 1, 2026 and becomes DELINQUENT Friday, December 11, 2026.
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https://www.boe.ca.gov/proptaxes/calendar.htm
§ 2606 Rev. & Tax. Code | February 1 | Property owners | Second installment real property taxes due and payable.
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https://www.boe.ca.gov/proptaxes/calendar.htm
If the specified date falls on Saturday, Sunday, or a legal holiday, the action may be done on the next business day. (Government Code §§ 6706, 6707)
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https://www.boe.ca.gov/proptaxes/calendar.htm
§§ 2618 and 2705 Rev. & Tax. Code | April 10 | Property owners | Second installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m., or close of business day, whichever is later. If the specified date falls on Saturday, Sunday, or a legal holiday, the action may be done on the next business day. (Government Code §§ 6706, 6707)
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https://www.tuolumnecounty.ca.gov/tax
First installment payments are subject to the 10% late payment penalty.
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https://www.tuolumnecounty.ca.gov/tax
2026-20267Annual Secured Property Tax bills are now available online and will be mailed over the next few weeks.
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Continue with your property
Common questions
Where do I file a Tuolumne County assessment appeal?
Clerk of the Tuolumne County Board of Supervisors
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