Completing the Business Property Statement (Form 571L). Appealing an Assessment.You must obtain a business license from Alameda County only if you are conducting any type of business, including leasing residential and commercial property. This section provides information to help you get started. Click through the steps above for a complete guide to starting a business in Alameda. There is no charge for the Preliminary Change of Ownership Report (PCOR) if it is complete and accompanies the transfer document. Below you will find information about the services we offer and addresses to our Oakland and Tri-Valley office locations. You may need to register a Fictitious Business Name with the County of Alameda. For more information, contact the County of Alameda Clerk-Recorder's Office at. Any other name other than the owner's last name requires filing a Fictitious Business Name statement.