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Property Assessment Information
Property Ownership Information
Proposition 13
Supplemental Assessments

The Alameda County Assessor is pleased to announce that the AC Property App is now available on 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 the iTunes store.

General & Ownership Information
(510) 272-3787

Business Personal Property:
(510) 272-3836

Our business hours are from 8:30AM to 5:00PM Monday through Friday except for holidays

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Press Releases

Tax Refund Advisory
Composition of the 2018-19 Surrendered Secured Roll by County (PDF - 11kb)*
2019-20 Assessment Roll – July 2019 (PDF - 549kb)*
Notification of 2018-19 Assessed Values – July 2018 (PDF - 126kb)*