Alameda County Online Filing Portal
The Alameda County Assessor's Office online portal allows homeowners to file their appeal and view settlement offers.
How to Access the Portal
- Find your account number and PIN on your assessment notice
- Visit the Alameda County Assessor's Office portal at https://aab.alamedacountyca.gov/
- Create an account or log in using your account number
- File your appeal and upload evidence
- Monitor for informal settlement offers