How to appeal a Alameda County, CA property assessment
✓ Verified — Last verified October 24, 2026
Filing details published for Alameda County. Match the notice and assessment cycle to the official instructions.
Official appeal instructionsNot tax or legal advice; confirm with your county.
Filing timing
A published appeal date below has passed. Check the official office for the applicable cycle; no later deadline has been inferred.
Where to file
File the county’s Assessment Appeal Application with the clerk of the board where the property is located.
Official source. Verified .
Official offices
Phong La
Sources for these instructions
https://boe.ca.gov/proptaxes/pdf/lta26023.pdf
The regular appeals filing period in each county will begin on July 2, 2026, and will end either on … September 15, 2026, or November 30, 2026, depending on whether the County Assessor has elected to mail … assessment notices to all taxpayers with property on the secured roll by August 1, 2026. … Alameda September 15
Verified October 24, 2026
https://www.boe.ca.gov/proptaxes/faqs/assessappeals.htm
Your application must be filed during a specific period with the clerk of the board in order for the application to be valid.
Verified October 24, 2026
https://www.boe.ca.gov/proptaxes/faqs/assessappeals.htm
Assessment Appeals Frequently Asked Questions (FAQs)
Verified October 24, 2026
Continue with your property
Common questions
Where do I file a Alameda County assessment appeal?
File the county’s Assessment Appeal Application with the clerk of the board where the property is located.