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Check or apply for a business license in California

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

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In California, 284 city governments and 55 county departments publish 399 official links for this service, 23 of them online. Reviewed requirements cover eligibility (77), documents (55), availability notices (19), payment methods (18), deadlines (11), processing time (4), appointments (3), languages (2) and accessibility (1). 53 counties have a page for it below.

Before you start · 4 things to check
  • 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.

5 guides with reviewed service links · Ventura

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County directory Reviewed service guides available
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U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · Ventura

Tax Collector

Business licensing

County business tax certificate and license requirements (opens in a new tab)Official instructions

The county programme concerns business conducted in unincorporated areas, including specified activity there by city-based businesses. Check the business activity and separate permit approvals.

Service area: County business activity in unincorporated Ventura County; includes city-based businesses that conduct covered activity there. A city-only location does not establish county applicability. Area details & sources

Source checked October 16, 2026

Ventura County official website · Ventura County business requirements (opens in a new tab)

Reviewed business licensing instructions

All businesses, professions, trades, vocations, enterprises, establishments, occupations and callings being conducted in the UNINCORPORATED areas of the county must obtain a Business Tax Certificate and/or Business License.

Saved evidence: 6a7d9e026520b0a2 · Agent source review

Home-business zoning clearance and business tax certificate process (opens in a new tab)Official instructions

Review the separate Planning home-occupation clearance and the Tax Collector certificate. Planning accepts the stated counter or Citizen Access submission; tax-certificate issuance is a separate step.

Service area: County business-tax certificate portion of the home-business process for activity conducted in unincorporated Ventura County; Planning clearance is a separate approval. Area details & sources

Source checked October 16, 2026

Ventura County official website · Ventura County business home occupation (opens in a new tab)

Reviewed business licensing instructions

Fill out the Tax Collector’s Business Tax Certificate Application form

Saved evidence: 937be282384366e5 · Agent source review

Full guide, contact details & sources →
City government · Ventura

City of Fillmore — Business licensing information

City of Fillmore

Business license information — City of Fillmore (opens in a new tab)Official instructions

The official source lists “Business License”. Follow the issuing provider's instructions for requirements and availability.

Service area: City of Fillmore Area details & sources

Source checked October 28, 2026

Fillmore municipal government · Fillmore — business licensing discovery (opens in a new tab)

Exact named official link (entrance only; linked contents not reviewed)

Business License

Saved evidence: 39b9c3c9b7b9ddcd · Agent source review

Full guide, contact details & sources →
City government · Ventura

City of Port Hueneme — Business licensing information

City of Port Hueneme

Business license information — City of Port Hueneme (opens in a new tab)Official instructions

The official source lists “Business Licenses”. Follow the issuing provider's instructions for requirements and availability.

Service area: City of Port Hueneme Area details & sources

Source checked October 28, 2026

Port Hueneme municipal government · Port Hueneme — business licensing discovery (opens in a new tab)

Exact named official link (entrance only; linked contents not reviewed)

Business Licenses

Saved evidence: f41a4445eb34c716 · Agent source review

Full guide, contact details & sources →
City government · Ventura

City of Santa Paula — Business licensing information

City of Santa Paula

Business license information — City of Santa Paula (opens in a new tab)Official instructions

The official source lists “Food Business License”. Follow the issuing provider's instructions for requirements and availability.

Service area: City of Santa Paula Area details & sources

Source checked October 28, 2026

Santa Paula municipal government · Santa Paula — business licensing discovery (opens in a new tab)

Exact named official link (entrance only; linked contents not reviewed)

Food Business License

Saved evidence: 948a75fc4552cca4 · Agent source review

Full guide, contact details & sources →
City government · Ventura

City of Simi Valley — Business licensing information

City of Simi Valley

Business license information — City of Simi Valley (opens in a new tab)Official instructions

Renew a Business Tax Certificate

Service area: City of Simi Valley Area details & sources

Source checked October 28, 2026

Simi Valley municipal government · Simi Valley — business licensing discovery (opens in a new tab)

Visible topic-specific information on the official page

Renew a Business Tax Certificate

Saved evidence: 6703621982e3aa31 · Agent source review

Full guide, contact details & sources →

Check or apply for a business license by county