California Property Tax Assessors

Alameda County, California Tax Assessors' Office

Alameda County Assessors Phone Number
Alameda County Assessor
1221 Oak Street, Room 145
Oakland, California 94612
Alameda County Assessors Fax Number 510-272-3803 (Fax)

Where is the Alameda County Tax Assessor's Office?

The Alameda County Tax Assessor Office is located at 1221 Oak Street, Room 145, at the County Administration Building building in Oakland, California.

What can the Alameda County Assessor's Office do for me?

The Alameda County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Alameda County.

Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.

Submitting a Alameda County property tax appeal

If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.

You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.

If you would like to appeal your property, call the Alameda County Assessor's Office at (510) 272 3787 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.

For more information and example appeals, see how to appeal your property taxes.

Useful Alameda County Facts:

The median home value in Alameda County is between $588,173.00 and $593,627.00. Property tax rates are based on property values.

How can I contact Alameda County?

You can try contacting the Alameda County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.

The county seat for Alameda County is located in the County Administration Building in Oakland, which is where the Alameda County Assessors' Office is also located. You can direct your general inquiries to Alameda County with the contact info listed below.

Alameda County Phone Number


Alameda County County Administration Building Address

County Administration Building
1221 Oak Street
Oakland, CA 94612-4222