Payments will be mailed to Henry C. Levy, Treasurer and Tax Collector Alameda County, PO Box 45862, San Francisco, CA 94145-0862. Your correspondence not related to your tax payments should continue to go our physical address at 1221 Oak Street, Room 131, Oakland, CA 94612.
You must obtain a business license from Alameda County only if you are conducting any type of business, including leasing residential and commercial property, or your business is based in an unincorporated area of Alameda County. DO NOT APPLY TO ALAMEDA COUNTY IF YOU OPERATE A BUSINESS WITHIN CITY LIMITS.
It's easy to do online, or visit the Office of Finance to complete your application in person. The State of California requires businesses that sell goods and products to obtain a California Sales Tax Certificate Number (also called a Seller's Permit).
New Business License Web Portal Announcement Please visit to apply for or renew your business license. For business license assistance, please contact HdL at (510) 250-1889 or Alameda@HdLGov. If you have any questions, do not hesitate to call us at (510) 747-4851.