Alameda County · California (CA)
How to Appeal Your Property Tax Assessment in Alameda County
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).
Covers Oakland, Fremont, and Berkeley. September 15 deadline applies.
Filing Deadline
July 2 to September 15
Appeals Body
Alameda County Assessment Appeals Board
Generate Your Alameda County Appeal Letter
Answer 3 questions, pick comparable properties, download your Alameda County Assessment Appeals Board-ready letter. Only pay when you are happy with the result.
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Filing Steps for Alameda County
1. Gather comps
Find 3-5 comparable properties in Alameda County assessed lower per square foot than yours. Use the county assessor's public records or property sites.
2. File your protest
Submit your protest to the Alameda County Assessment Appeals Board by July 2 to September 15. Include your evidence and this letter.
3. Attend your hearing
Present your case. Most hearings take 10-15 minutes. Many are resolved informally before the formal hearing date.
Cities in Alameda County
Other Counties in California
Deadlines and procedures change. Always verify with the Alameda County Assessment Appeals Board before filing. This is not legal advice.