How to appeal a Butte County, CA property assessment
✓ Verified — Last verified October 25, 2026
Filing details published for Butte 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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Where to file
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Official offices
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Butte County Assessor’s Office
Sources for these instructions
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Read the source quotations (11)
https://www.buttecounty.net/223/Dates-Deadlines
July 2nd through November 30th - Period for filing application for assessment appeal with the Clerk of the Board
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https://www.boe.ca.gov/proptaxes/calendar.htm
§ 2605 Rev. & Tax. Code November 1 Property owners First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
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https://www.boe.ca.gov/proptaxes/calendar.htm
§§ 2617 and 2704 Rev. & Tax. Code December 10 Property owners First installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m. or close of business day, whichever is later.
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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.buttecounty.net/955/Property-Tax-Due-Dates
If a final due date falls on a weekend or holiday, the taxes may be paid without penalty until 5 pm on the next business day.
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https://www.buttecounty.net/955/Property-Tax-Due-Dates
December 10: Final day to pay the first installment of secured property taxes. A 10% penalty is added after 5 pm. Online payments, however, will be accepted as timely if paid by midnight on the final due date. … April 10: Final day to pay the second installment of secured property taxes. A 10% penalty and an additional $44 charge is added to the bill after 5 pm. Online payments, however, will be accepted as timely if paid by midnight on the final due date. … If a final due date falls on a weekend or holiday, the taxes may be paid without penalty until 5 pm on the next business day.
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https://www.buttecounty.net/960/Property-Taxes
Secured property tax bills for the 2026-2027 fiscal year can now be accessed online and tax bills were mailed at the end of September.
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https://www.buttecounty.net/960/Property-Taxes
If you have questions about the assessed value of your property, please contact the Assessor's Office at 530.552.3800
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Continue with your property
Common questions
Where do I file a Butte County assessment appeal?
Butte County Clerk of the Board
Updated , from cited verification dates. Individual sources may have earlier checks.