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Check or apply for a business license

Check local business license or business tax certificate requirements, the right authority and application options.

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 · Lake

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Highlighted counties have a reviewed service guide matching this selection. An agency may serve only a city or part of a county.

California58 counties

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Map source

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

County government · Lake

County of Lake — economic development guidance

Business licensing requirements and referrals depend on the business activity and its location. Read the specific service scope before applying.

County and city business-license requirementsOfficial instructions

The county guidance distinguishes unincorporated Lake County from Clearlake and Lakeport. Other departments may still require activity or development approvals.

Source checked October 16, 2026

Lake County official website · Lake County business startup (opens in a new tab)

Reviewed business licensing instructions

Starting a business in the unincorporated areas of Lake County does not require a business license. Businesses located in Clearlake and Lakeport require a business license from the municipality.

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