Business Registration

Link to Online Registration:

The City of Orinda values its relationship with the business community and encourages you to register your business. The easiest and fastest way to register your business or renew your current registration is using the online filing method by visiting

If you need assistance or help registering your business, please contact or by phone at (925) 374-5885.

Interested in finding registered businesses: Search Orinda Businesses

Business Resources

Orinda Chamber of Commerce

The mission of the Orinda Chamber of Commerce is to promote businesses and business interests in the City of Orinda by providing information, communication, and activities that benefit and enhance the community, citizens and City of Orinda. To learn more, please visit the following link: Orinda Chamber of Commerce.

City Planning Department

For information regarding the City’s zoning regulations, please contact the Planning Department at (925) 253-4210. Staff can help explain whether special requirements, if any, might apply.

For more information regarding building permit requirements, please contact the Contra Costa County Department of Conservation and Development at (925) 655-2700.

Fictitious Names

If you plan to use a fictitious name (a name different from your own), be sure and check with the County Clerk to make sure that no one else is using that name. You can contact the County Clerk at 925-335-7900, 555 Escobar Street, Martinez or visit the following link for more information: Contra Costa County Fictitious Name Information.

State of CA Seller’s Permit (Sales Tax)

For any business selling tangible property that is subject to State Sales and Use Tax, a Seller’s Permit Number is required. For more information, call the California Department of Tax and Fee Administration (CDTFA) at 510-622-4100 or visit the following link: State Sellers Permit Information.

Federal and State Tax Identification Numbers

If you need to obtain a State Identification Number and a Federal Employer Identification Number to report employee taxes, please visit the following visit the following link: IRS-Employer ID Numbers. For more information, contact the State at 1-800-338-0505 and the Internal Revenue Service at 1-800-829-3676.