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Contact Us

NOTE: OUR PUBLIC COUNTERS ARE NOW OPEN. PLEASE CONSIDER CALLING OR EMAILING US AHEAD OF TIME AS MANY ISSUES CAN BE RESOLVED BY PHONE OR EMAIL.

Our business hours are for our Oakland offices are 9:00 AM to 4:30 PM Monday through Friday except for holidays.

Business hours for our Dublin Satellite Office are 9:00 AM to 4:30 PM Tuesday through Thursday except for holidays.

Please click HERE for a list of holidays when our Office is closed.

Feel free to email us anytime at AssessorWebResponse@acgov.org. If your questions are specific to Business Personal Property, please email AssessorBPP@acgov.org. We will respond to you in a timely manner.

If you have an urgent matter that requires an in-person meeting with our staff, please click here to be directed to our in-office appointment request form. We encourage you to CALL or EMAIL our Office before requesting an in-person visit, as many issues can be resolved with a phone call or email message.

 

Office Section Phone Number Fax Number Email
Assessor’s Office – Public Inquiry 1221 Oak Street, Room 145, Oakland CA, 94612 (510) 272-3787 (510) 272-3803 AssessorWebResponse@acgov.org
Business Personal Property Office Located at: 125 12th Street, Suite 320, Oakland CA, 94607 (510) 272-3836 (510) 891-5542 AssessorBPP@acgov.org
Dublin Satelite Office – 7600 Dublin Blvd #270, Dublin CA, 94568 (510) 272-3787 N/A N/A
Assessment Roll (510) 272-3800 ARoll@acgov.org 
Exemptions – Homeowners (510) 272-3770 (510) 272-3803 AssessorWebResponse@acgov.org
Exemptions – Other (510) 272-6587 (510) 272-3803 Exemptions@acgov.org 
Mapping (510) 208-4878 N/A N/A
South County Toll-Free (800) 660-7725 (510) 272-3803 N/A

Our Office Leadership

Attention!A Message to Boat Owners

Dear Alameda County Residents:

Many vessel owners will see an increase in their 2022 property tax valuations!
 
The valuation factors calculated by the State Board of Equalization and provided to California County Assessors through LTA 2022/003 indicate an increase in 2022 values between 20-24% depending on the type of vessel. The State Board of Equalization reviews average retail sale prices for new and used powerboats, sailboats, and personal watercraft annually to develop the valuation factors. Per their research, these vessels have experienced large appreciation in value compared to 2021.

For more information please click here.

Sincerely,

The Alameda County Assessor’s Office