Individuals or entities conducting business in California under a name other than their full legal name, must have a DBA name. If you are curious which business names in California are already registered, you may search by county. In California you can file your DBA (aka trade name, assumed name or fictitious business name) yourself with your County Recorder’s office. Or, use a legal document service such as LegalZoom to handle the entire process for you. LegalZoom charges $99.00 (plus state filing fees) for California DBA’s. Click here to learn more about pricing.