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The Alameda County Assessor is pleased to announce that the AC Property App is now available on Android devices as well as Apple devices. You can lookup your assessed value, property taxes, and parcel map. You can even pay your property taxes right from the app. Download it from Google Play or the iTunes store.
General & Ownership Information
Business Personal Property:
Our business hours are from 8:30AM to 5:00PM Monday through Friday except for holidays
Mailing Address Change
Most taxpayers are unaware that maintaining the mailing address is the responsibility of the Assessor, not the Tax Collector.
It is essential that we have your correct mailing address. Notification of assessments, tax bills and all other tax related correspondence will be mailed to that address.
If you wish to change your mailing address, please complete the Mailing Address Change Request form and return it to our office. Please note that we maintain only one mailing address for all your assessment and tax related mail.
Select the Business Personal Property form if you own a business and are not the owner of the real property at your business location.