The 47 California Counties Where Regular Assessment Appeals Close November 30
California's regular assessment appeal filing period began July 2, 2026, and it ends on one of two dates. The State Board of Equalization's Letter to Assessors No. 2026/023, dated June 2, 2026, explains the split.
The period ends September 15, 2026 in counties where the assessor mails assessment notices to all taxpayers with property on the secured roll by August 1, 2026. Where notices are not mailed by August 1, the period is extended to November 30, 2026.
The letter lists every county.Eleven counties close September 15The Board's list shows Alameda, Alpine, Inyo, Kings, Mono, Placer, San Francisco, San Luis Obispo, Santa Clara, Sierra and Ventura ending their regular filing period on Tuesday, September 15, 2026.Forty-seven counties close November 30The other 47 counties end the regular period on Monday, November 30, 2026.
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