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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 · Humboldt

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County government · Humboldt

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Business licensing

Update an existing Humboldt County business licenseOfficial instructions

Return the official update form for an existing license. A change of location needs a new application.

Service area: Updates to existing county business licenses for unincorporated Humboldt County; location changes require a new application. Area details & sources

Source checked October 16, 2026

Humboldt County official website · Humboldt County — business licensing discovery (opens in a new tab)

Reviewed business licensing instructions

To update an existing license, complete and return the County of Humboldt Business License Update Form (PDF). Updates cannot be processed for a change of location, a new application is required.

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