Alameda County Property Tax Appeal Deadline
113 days until the California property tax appeal deadline
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Key Dates for Alameda County
| Appeal deadline | Appeals of regular assessments are filed July 2 through September 15 of each year, filed with the Clerk of the Board of Supervisors (Assessment Appeals Board), 1221 Oak Street, Room 536, Oakland. Supplemental, roll-change, and escape assessments: within 60 days of the notice mailing/postmark date. Separately, a homeowner may file an informal 'Request for Decline in Market Value' (Proposition 8) reassessment with the Assessor's Office by April 10 of the year they believe the property is over-assessed; the informal request is not a substitute for the formal appeal filing deadline. |
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| Lien date | January 1, 2026 |
| Statute | Cal. Rev. & Tax. Code §1603(b) |