Opening a Business

Congratulations on making the decision to open a business in Contra Costa County! We welcome your business and look forward to seeing you open your doors.

When starting a new business, there are many important decisions to make and many rules and procedures that must be addressed. While there is no single source for all filing requirements, the following have been provided to assist you in the permitting component of starting your business in one of the unincorporated communities of Contra Costa County.

If you are located in an incorporated City, please contact your home city for more information because most of this section will not apply to you - with the exceptions of Environmental Health requirements, which regulate certain types of businesses countywide, and Business Licenses, which Contra Costa County requires of anyone who conducts business within the unincorporated county in addition to those with a physical business location in an unincorporated community.

Opening a Business

Land Use  and Zoning Requirements 

All businesses must be consistent with the allowed uses in their zoning districts; additionally, the building housing a business must meet the development guidelines for its area.

In order to apply for a Business License, you must have a signed Use Verification Form that states your proposed use is consistent with the County's Zoning Code.
Property Use Verification Form (PDF)

Map application to find your zoning

More information about planning applications

Home Occupation

If you will be operating your business out of your home, you will need a Home Occupation Permit (PDF)

Learn more about Home Occupation Permits (PDF)

Business Licensing

General Information
Where to Go
How to Apply
Cost and Requirements
Online Renewal

Environmental Health

The Environmental Health Division is a regulatory agency that provides oversight for businesses and property owners to protect the health and safety of the citizens of Contra Costa County and our environment. Find out more about Environmental Health permits and licensing programs.

Financing and Other Resources

The Contra Costa Small Business Development Center provides free training opportunities to business owners and aspiring entrepreneurs.
See a calendar of training and networking events

The Economic Development Office in the Department of Conservation and Development can provide for customized recommendations for business resources.
Find out more about Economic Development in Contra Costa County