County of Marin Business License Tax Marin County Ordinance 3042 was enacted by the Marin County Board of Supervisors in Fiscal Year 1991-92. The ordinance requires that every person engaging in business within the unincorporated area of the County must register for a business license and renew their business license annually by June 30th. In 2018, an online portal was introduced to the public to register and renew business license online.
New Business Licenses Issued by Quarter
The measure is based on a dataset that includes the number of new business licenses issued in unincorporated Marin County by quarter.
Active Business License in Unincorporated Marin County
This map shows the active business licenses in the Unincorporated County of Marin. It allows you to filter by business type. You may also search for active Business Licenses by Address.
County Ordinance & Regulations:
- County of Marin Community Development Agent (CDA) Ordinance 3705-Just Cause for Eviction
Business License unit is located at the Marin County Civic Center: 3501 Civic Center Dr. San Rafael - Room 217
Phone Number: (415) 473-7045 Email: Business License
To Register for a Business License or renew annually visit:
Business License Webpage:
For additional resources are available on the Business License website.