Not as such, but you will probably need a trader's license from the city. You will also need a "license" to collect sales taxes--really just an ID number. You get that from the State Dept of Assessments. I am attaching a helpful link they have.
Contact me if you have any other legal issues, or to discuss why you may benefit from having an LLC.
Licensed in Maryland with offices in Maryland and Oregon. Information here is general, does not create a lawyer-client relationship, and is not a substitute for consulting with an experienced attorney on the specifics of your situation.