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Modoc County · CaliforniaAppeal Your Modoc County Property Tax.
The Modoc County Assessor's office in Alturas values every property on California's January 1 lien date. When that assessed value overshoots the market, you have two tools: an informal Prop 8 decline in value review with the assessor, or a formal Assessment Appeals Board filing with the Clerk of the Board.
Modoc County Assessor
Source: California State Board of Equalization county directory.
Modoc County Prop 8 Filing Steps
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Check if your property qualifies
Run your address or APN through vulorean.com to see if your assessed value exceeds current market value as of January 1. If it does, you have a viable Prop 8 claim.
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Get your Vulorean valuation report
The report produces a market value opinion as of the January 1 lien date and includes comparable sales. Choose DIY (you file using the report) or Concierge (Vulorean handles everything from here).
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Contact the Assessor to file your informal review
Modoc has no dedicated online Prop 8 form — all reviews are initiated by contacting the Assessor directly.
DIY Call the Assessor to request an informal review and submit your Vulorean report as supporting documentation.Concierge Your Vulorean rep contacts the Assessor and handles the submission on your behalf.- Assessor info: co.modoc.ca.us/departments/assessor
- Assessor phone: (530) 233-6218
- Assessor office: 204 S. Court Street, Alturas, CA 96101
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Await assessor response
DIY If approved, your reduced value is reflected on your tax bill and reviewed annually.Concierge Your Vulorean rep monitors the response and keeps you informed. -
Formal appeal if denied
DIY File an Application for Changed Assessment (BOE-305-AH) with the Modoc County Assessment Appeals Board between July 2 and November 30. Note: you or your authorized rep must personally appear at the hearing or the application will be denied. File in parallel with step 3 to protect your rights.Concierge Your Vulorean rep handles the appeal filing and hearing appearance on your behalf.- Assessment Appeals Board: co.modoc.ca.us — Assessment Appeals
- Clerk of the Board: 204 S. Court Street, Alturas, CA 96101
Modoc County reminder: California's Prop 13 caps annual taxable value growth at 2%, so a successful appeal keeps paying dividends every year your market value sits below the Prop 13 base. Prop 8 is the complement. It lets you capture temporary market dips. Both paths run through the Modoc County Assessor in Alturas.
When You Probably Qualify for a Modoc County Reduction
- Your current assessed value is above recent sales of comparable homes in Modoc County
- You bought in Modoc County in the last 12 months below the county's assessed value
- Your Modoc Assessor parcel record has errors, wrong square footage, added features that don't exist, or incorrect grade
- Your home has unrepaired damage, structural issues, foundation settling, or major deferred maintenance
- Your neighborhood's market softened but the Modoc Assessor hasn't adjusted
Modoc County Appeal Package · $50 Flat
We pull your Modoc County Assessor record, build comparable sales, and produce a filing ready BOE-305-AH appeal in 48 hours. You keep 100% of the savings.
Start My Modoc County Appeal →Modoc County Property Tax FAQ
When does Modoc County mail assessment notices?
California counties, including Modoc, typically mail notices in June or July. Your window to file BOE-305-AH opens July 2 and closes either September 15 or November 30 depending on the county's Clerk of the Board schedule. Confirm with the Modoc Clerk's office.
Do I have to use an attorney?
No. The California Assessment Appeals Board is designed for pro se homeowners. Filing BOE-305-AH is a two page form and hearings are informal. Most Modoc County homeowners file and represent themselves.
Will my Modoc County taxes go up if I appeal?
No. California appeal outcomes at the Assessment Appeals Board are strictly reductions or no change. Prop 13 caps assessed value growth at 2% per year regardless.
Is Prop 8 the same as Prop 13?
No. Prop 13 is the base year rule that caps annual assessment growth. Prop 8 is the companion rule that lets the assessor (or you) temporarily drop your value below the Prop 13 base when the market falls. When the market recovers, your value can rise back up to the Prop 13 cap, but not above it.