Do I need a business license in San Diego for wholesaling?

[Jose Angel dominguez]

I know you need a Real Estate License to sell a house but I will not be acting as an agent. I will only be assigning contracts to investors. 

San Diego wholesalers my question again: Do I need a business license to assign a contract to a buyer? If so what is the process? Do I need to register a FBN and then a Business license and under what description my business will be?  I will appreciate you guys honest responses thank you.