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Close or update a business license

Find instructions for closing a license or reporting ownership, address or business changes.

Before you start

Start with where your business is located and where it will operate. A county license may apply only to unincorporated areas or specific activities; cities can have their own requirements.
Some county offices provide guidance or referrals and do not issue a general business license. Read the entry before choosing an application.
A business license or tax certificate, an FBN/DBA filing, business entity registration and a professional license serve different purposes. Zoning, health and other activity permits may also apply. Business stormwater registration is a separate local programme where required.
Check the license period, renewal date and rules for changes in ownership or location. A renewal may not cover a move or a new owner. Fees and application steps depend on the license category.

1 guide with reviewed service links · Contra Costa

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U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · Contra Costa

Business licensing

Return the license with a written closure request, or use the mailbox the county designates for closure requests.

Service area: Closure of county licenses for business conducted in unincorporated Contra Costa County. Area details & sources

Source checked October 16, 2026

Reviewed business licensing instructions

To close a license, return your Business License with a written request, or email businfo@tax.cccounty.us.

Saved evidence: c1ee49520641bd86 · Agent source review