How to appeal a Lassen County, CA property assessment
✓ Verified — Last verified October 25, 2026
Filing details published for Lassen 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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Nick Ceaglio
Sources for these instructions
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Read the source quotations (14)
https://www.boe.ca.gov/proptaxes/faqs/assessappeals.htm
You must file an Assessment Appeal Application, form BOE-305-AH, obtained from the clerk of the board of the county where your property is located.
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https://www.boe.ca.gov/proptaxes/faqs/assessappeals.htm
The filing periods for a lien date appeal (where the value of your property was on the roll on January 1) are from July 2 to September 15, or July 2 to November 30, depending upon the county in which you are located.
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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://countytaxretriever.com/bills_iframe/secured/4/121050031000/index.html
DELINQUENT AFTER 12/10/2026 (INCLUDES 10% PENALTY OF $19.92)
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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://countytaxretriever.com/bills_iframe/secured/4/121050031000/index.html
DELINQUENT AFTER 04/12/2027 (INCLUDES 10% PENALTY OF $19.92 AND $20.0000 COST)
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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://countytaxretriever.com/bills_iframe/secured/4/121050031000/index.html
SECURED TAX ROLL FOR FISCAL YEAR JULY 1, 2026 THROUGH JUNE 30, 2027
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Continue with your property
Common questions
Where do I file a Lassen County assessment appeal?
File the county's Assessment Appeal Application (BOE-305-AH) with the clerk of the board in the county where the property is located.
Updated , from cited verification dates. Individual sources may have earlier checks.