Page with information about business licenses a new license in Alameda County, including information regarding unincorporated areas and renewing licenses. Most business owners will be able to take full advantage of e-filing.This section provides information to help you get started. Click through the steps above for a complete guide to starting a business in Alameda. Completing the Business Property Statement (Form 571L). Appealing an Assessment. Who must obtain a seller's permit? What does engaged in business mean? A Business License is an annual tax you pay each calendar year for doing business within the unincorporated area of the County of Alameda. Both the seller and purchaser of a group of assets that makes up a trade or business must use Form 8594 to report such a sale.