Property Tax System

The Assessor, Auditor-Controller, and the Treasurer-Tax Collector all play distinct roles in the property tax system. Below is a brief description of how these County departments interrelate.

Attention!A Message About Our Public Counters

The Assessor’s Office is open to the public and is providing appointments for in-office visits. Please visit our Contact page for more information.

Please note that our technicians remain available to provide assistance via telephone (510-272-3787) from 8:30AM-5:00PM Monday through Friday.

If you need to drop-off documents, please leave them in the box provided outside our Office and staff will retrieve them promptly to protect confidentiality.

We sincerely appreciate your understanding and patience during this time.