You could be required to obtain a license with the Department of Professional and Occupational Regulations (DPOR) in addition to the County business license. The State classifications are either a Class A, B or C License. Generally this license is needed, when you accept or bid on any jobs over $1,000.
Once the State license has been issued, this does not exempt you from any county or city license. For more information please call the State Board for Contractors at 804-367-8511.