Sonoma County Business Name Search

Search for Sonoma County CA business names. A business name search can help you choose a business name, register a business, identify a trade name, trademark a business name, name an LLC, look up business owners, check if a business name is available, license a business, and more.


A Department of Labor operates at the federal, California State, or local Sonoma County level to develop employment opportunities, ensure fair labor practices, and promote a competitive workforce. As part of this mission, the Department of Labor may be involved in licensing and registration for businesses under its jurisdiction, including registering business names in Sonoma County. A Sonoma County business name search through the Department of Labor can include business names for sole proprietors, partnerships, corporations, limited partnerships, or limited liability companies. This search can also identify the owner of a business and trademarked business names. Many Departments of Labor provide online access to business name search information.

Santa Rosa California Department of Labor Santa Rosa CA 50 D Street 95404 707-576-2362


A Town or City Hall provides administrative services for the local Sonoma County community, including business services such as registering local businesses or processing applications for business licenses. Towns and City Halls in Sonoma County California may also be responsible for issuing trade names to local businesses. They may provide online access to a business name search so that people can identify Sonoma County business names for sole proprietors, partnerships, corporations, limited partnerships, or limited liability companies. This search can also be used to identify the owner of a Sonoma County business as well as any trademarked business names. Town and City Halls may provide an online searchable database of local business names and information.

Cloverdale City Hall Cloverdale CA 124 North Cloverdale Boulevard 95425 707-894-2521

Cotati City Hall Cotati CA 201 West Sierra Avenue 94931 707-792-4600

Healdsburg City Hall Healdsburg CA 401 Grove Street 95448 707-431-3300

Petaluma City Hall Petaluma CA 11 English Street 94952 707-778-4362

Rohnert Park City Hall Rohnert Park CA 130 Avram Avenue 94928 707-588-2200

Santa Rosa City Hall Santa Rosa CA 100 Santa Rosa Avenue 95404 707-543-3010

Sebastopol City Hall Sebastopol CA 7120 Bodega Avenue 95472 707-823-7865

Sonoma City Hall Sonoma CA 1 The Plaza 95476 707-938-3681