//Thousand Oaks, California

How to start a business in Thousand Oaks.

Thousand Oaks anchors the affluent Conejo Valley, home to Amgen and a deep base of corporate and professional firms. Here is the practical sequence to register, get your Business Tax Certificate, and open, with the official links and free help.

Starting a business in Thousand Oaks? The official steps and source links are below.

Already operating or launching with budget in place? You can also

Thousand Oaks is the corporate heart of Ventura County. The biotech company Amgen is headquartered here, anchoring a Conejo Valley economy thick with professional services, finance, and technology firms. The Civic Arts Plaza, The Oaks shopping center, and Wildwood Regional Park round out an affluent, educated city that judges credibility quickly.

That bar is the opportunity. Customers and partners here expect substance and polish, so a credible launch matters. Getting open cleanly, with the right Business Tax Certificate and permits, sets the tone. Getting found and trusted comes next. This guide covers the first in detail, then points you to the second.

//The sequence

How to start a business in Thousand Oaks, step by step.

This is the order that works for most new Thousand Oaks businesses. Requirements vary by entity, location and industry, so use the city, county and state sources below to confirm what applies to yours.

1
Register the business and the name
Form an LLC or corporation with the California Secretary of State through bizfile Online, or stay a sole proprietor. If you use a name that is not your legal name, file a fictitious business name (DBA) statement with the Ventura County Clerk-Recorder within 40 days of starting business. It costs $76 for one name and one registrant, plus $10 for each additional name or registrant; you can start online but finish in person with your original signature. Publish it within 45 days of filing, once a week for four consecutive weeks in a newspaper of general circulation in the county.
CA Secretary of State: bizfile Online Ventura County Clerk-Recorder: Fictitious Business Name
2
Get your free EIN and any seller's permit
The IRS says you generally need an EIN to hire employees or to operate a partnership or corporation. It issues the number online, immediately if approved, and never charges for it. If you sell or lease goods that would ordinarily be subject to sales tax, you also need a seller's permit from the CDTFA, which does not charge for it but may ask for a security deposit.
IRS: Get an EIN CDTFA: Seller's permit
3
Get your Thousand Oaks Business Tax Certificate
Every business operating within city limits or keeping a business address in Thousand Oaks needs a Business Tax Certificate (also called a business license) before conducting any business. Apply online for faster processing and lower processing fees, or send a paper application by mail, email or fax. The application is routed to the city departments that must approve it, and after approval you are emailed payment instructions; pay online, by mail or by phone. Veterans who qualify under AB 498 are exempt from business license fees. Finance Department: (805) 449-2201.
City of Thousand Oaks: Business Licenses
4
Confirm zoning and pull any industry permits
Confirm your use is allowed at the address with the city before you sign a lease. If you sell or serve food: Ventura County Environmental Health issues the Permit to Operate every restaurant and market needs, and state law requires plans approved before a new facility is built or an existing one is remodeled. Plan review is usually needed for new construction, remodels, new or replacement equipment, an ownership change or a menu change: (805) 654-2813. For other permits, GO-Biz offers permitting and regulatory help for any size company.
Ventura County Environmental Health: Consumer Food Protection Ventura County Environmental Health: Food Plan Check GO-Biz: Permit & Regulatory Assistance
5
Renew by the end of February
Certificates expire December 31 and must be renewed on January 1; one not renewed by March 1 is delinquent. The city sends a courtesy notice at the end of the year, but renewing by the last day of February is the owner's job. Renew, update your information and download your certificate online.
City of Thousand Oaks: Business Licenses
6
Check the $800 California tax rules for your entity
Every California LLC owes the $800 annual tax, even in a year it does no business, until it is cancelled. Corporations owe an $800 minimum franchise tax, but newly incorporated or qualified corporations do not pay it in their first taxable year.
Franchise Tax Board: LLC $800 annual tax Franchise Tax Board: Corporation minimum tax
7
Use the free help that already exists
The EDC Small Business Development Center offers one-on-one advising, workshops and in-depth programs at no cost for Ventura County businesses. Use it before you pay a consultant.
EDC Small Business Development Center (free advising)

//Free Thousand Oaks checklist

Take the steps with you.

Get the Thousand Oaks business checklist with the city, county, state and federal source links in one place, plus the licensing office of every Ventura County city. We keep the source page dated so you can see when it was last checked.

//Common questions

Things we get asked first.

Do I need a business license in Thousand Oaks?

Yes. Every business operating within city limits or keeping a business address in Thousand Oaks needs a Business Tax Certificate, which the city also calls a business license, before conducting any business activity.

Source: City of Thousand Oaks, Business Licenses

When does a Thousand Oaks Business Tax Certificate expire?

Every December 31. Renew on January 1; a certificate not renewed by March 1 is delinquent. The city sends a courtesy notice at the end of the year, but renewing by the end of February is your responsibility.

Source: City of Thousand Oaks, Business Licenses

Can I apply on paper?

Yes, by mail, email or fax, but the city says applying online is faster and costs less in processing fees. After the city departments approve the application, you are emailed instructions to pay.

Source: City of Thousand Oaks, Business Licenses

Where do I file a DBA for a Thousand Oaks business?

With the Ventura County Clerk-Recorder, if you use a name that is not your legal name: $76 for one name and one registrant, plus $10 for each additional. The Clerk-Recorder has an office in Thousand Oaks, closed every other Friday, as well as the main office at the Government Center in Ventura.

Source: Ventura County Clerk-Recorder, Fictitious Business Name

How do I open a restaurant in Thousand Oaks?

Beyond the Thousand Oaks Business Tax Certificate, every restaurant and market needs a Permit to Operate from Ventura County Environmental Health, which inspects more than 5,000 food facilities across the county. State law requires plans approved before you build or remodel; submit an application and 3 sets of plans with the fees, or upload them online. An ownership or menu change usually needs plan review too: (805) 654-2813.

Sources: Ventura County Environmental Health, Food Plan Check and Consumer Food Protection

Where can I get free help starting my business?

The EDC Small Business Development Center offers one-on-one advising, workshops and in-depth programs at no cost for Ventura County businesses. Use it before you pay a consultant.

Source: EDC Small Business Development Center

//Already operating?

The marketing question starts after the filing question.

If the business is already open, or the launch is funded, tell our founders what you want to change. We will look at the business before recommending SEO, paid media, the website or anything else.

For operating businesses and funded launches with budget available to act on the plan.

//Bookmark these

Official Thousand Oaks, Ventura County, and California resources.

Every link here goes straight to a government or nonprofit source. These are the agencies that actually issue your registrations and permits, so go to them directly rather than a paid middleman.

City of Thousand Oaks: Business Licenses
A Business Tax Certificate before you do business, for any business in the city or with an address there. Expires December 31. (805) 449-2201.
Ventura County Clerk-Recorder: New Business Information
Every Ventura County city's business license office, with its address and phone, plus the county's own permits.
County of Ventura Treasurer-Tax Collector: Business Tax Certificate
Required for every business conducted in the unincorporated areas, with county Planning and Building approvals. (805) 654-3727.
Ventura County Clerk-Recorder: Fictitious Business Name
$76 for one name and registrant, plus $10 for each additional. Start online, sign in person, publish within 45 days. (805) 654-2263.
Ventura County Environmental Health: Consumer Food Protection
Issues Permits to Operate and inspects more than 5,000 food facilities across the county every year.
Ventura County Environmental Health: Food Plan Check
Plans for new construction, remodels, equipment, an ownership change or a menu change. (805) 654-2813.
Ventura County Assessor: Property Statement Filing
File if your business property cost $100,000 or more, or the Assessor asks: due April 1, late after May 7. (805) 654-2181.
EDC Small Business Development Center (free advising)
One-on-one advising, workshops and programs at no cost. 4001 Mission Oaks Blvd, Camarillo, (805) 409-9159.
CA Secretary of State: bizfile Online
Where LLCs and corporations file with the California Secretary of State.
IRS: Get an EIN
Your federal tax ID. Apply online and, if approved, the number is issued immediately. The IRS never charges a fee for an EIN.
CDTFA: Seller's permit
Required if you sell or lease goods that would ordinarily be subject to sales tax. The CDTFA does not charge for it, though it may ask for a security deposit.
Franchise Tax Board: LLC $800 annual tax
Every LLC doing business or organized in California owes the $800 annual tax, even in a year it does no business, until the LLC is cancelled.
Franchise Tax Board: Corporation minimum tax
Corporations owe an $800 minimum franchise tax, but newly incorporated or qualified corporations do not pay it in their first taxable year.
GO-Biz: Permit & Regulatory Assistance
The Governor's Office of Business and Economic Development says it will assist any size company with permitting and regulatory questions.