A commercial business is defined as a business or individual that provides a service or sells physical products. Commercial businesses are also defined as an industrial, retail, or commercial business office within the limits of a specific city. In order for a commercial business to be considered legal, it must have a business license from the city in which it is operating. The business might also have to be approved by the city’s Community Planning Department. Before being issued a business license, business owners generally require zoning approval. For any special conditions or restrictions, business owners can receive a conditional-use permit.