Visit or Contact Us
The Alameda County Assessor’s Office is here to help. You can reach us by phone, email, or visit one of our office locations below.
Please consider calling or emailing ahead of time as many issues can be resolved by phone or email.
Office Hours: 9:00 AM – 4:30 PM, Monday–Friday (Holiday closures)
Major Service Areas
Assessee Services
Ownership and assessment inquiries. Single-family, multi-family, rural, and commercial/industrial properties.
(510) 272-3787
Business Personal Property
Equipment, fixtures, boats, and aircraft assessments.
(510) 272-3836
Assessment Roll
Changes of ownership research, verification, and processing.
(510) 272-3800
Mapping
Parcel maps and property inventory for all real property.
(510) 208-4878
Exemptions
Homeowners’ exemption claims, Institutional and veterans’ exemption requests.
(510) 272-3770 — Homeowners’ & Disabled Veterans’
(510) 272-6587 — Institutional
Dublin Satellite Office
Full Assessor services for East and South Alameda County.
(510) 272-3787
Visit Us
Office Hours: 9:00 AM – 4:30 PM, Monday–Friday (Holiday closures)
Oakland Main Office
1221 Oak Street, Room 145, Oakland, CA 94612
Phone: (510) 272-3787 Fax: (510) 272-3803
Business Personal Property Division
125 12th St, Suite 320
Oakland, CA 94607
Phone: (510) 272-3836 Fax: (510) 891-5542
Dublin Satellite Office
7600 Dublin Blvd, Suite 270, Dublin, CA 94568
Phone:(510) 272-3787