California (CA) · Property Tax Appeal
How to Appeal Your Property Tax Assessment in California
File an Assessment Appeal Application (BOE-305-AH) with your county Assessment Appeals Board. The 2026 filing window opens July 2 in every county and closes September 15 in 11 counties or November 30 in the other 47, depending on when your assessor mails value notices (source: BOE Letter To Assessors 2026/023).
Filing Deadline
July 2 to September 15 or November 30, by county
Appeals Body
Assessment Appeals Board
Generate Your California Appeal Letter
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Property Tax Appeal by City in California
Property Tax Appeal by County in California
Calaveras County
Calaveras County Assessment Appeals Board
Deadline: July 2 to November 30
El Dorado County
El Dorado County Assessment Appeals Board
Deadline: July 2 to November 30
Kern County
Kern County Assessment Appeals Board
Deadline: July 2 to November 30
Monterey County
Monterey County Assessment Appeals Board
Deadline: July 2 to November 30
Napa County
Napa County Assessment Appeals Board
Deadline: July 2 to November 30
San Joaquin County
San Joaquin County Assessment Appeals Board
Deadline: July 2 to November 30
San Luis Obispo County
San Luis Obispo County Assessment Appeals Board
Deadline: July 2 to September 15
Santa Clara County
Santa Clara County Assessment Appeals Board
Deadline: July 2 to September 15
Santa Cruz County
Santa Cruz County Assessment Appeals Board
Deadline: July 2 to November 30
Siskiyou County
Siskiyou County Assessment Appeals Board
Deadline: July 2 to November 30
Solano County
Solano County Assessment Appeals Board
Deadline: July 2 to November 30
Sonoma County
Sonoma County Assessment Appeals Board
Deadline: July 2 to November 30
Stanislaus County
Stanislaus County Assessment Appeals Board
Deadline: July 2 to November 30
Sutter County
Sutter County Assessment Appeals Board
Deadline: July 2 to November 30
Tuolumne County
Tuolumne County Assessment Appeals Board
Deadline: July 2 to November 30
How to Appeal Your Property Taxes in California
1. Gather evidence
Your current assessed value vs. recent sales of comparable properties in your neighborhood.
2. File your protest
Submit to the Assessment Appeals Board by July 2 to September 15 or November 30, by county. Late filings are typically rejected.
3. Attend your hearing
Present your comps and letter. Most hearings are brief. Many are resolved before the hearing date.
Deadlines and procedures change. Always verify with your county assessor or Assessment Appeals Board before filing. This is not legal advice.