Information is maintained by the Commissioner of the Revenue for the purposes of tax administration and most of that information is protected from disclosure by law. The Code of Virginia, § 58.1-3 is very specific with regard to privacy of tax information and only allows local tax officials to disclose "whether a person, firm or corporation is licensed to do business in that locality."
Due to the volume of requests for information maintained by the Commissioner of the Revenue and the Commissioner's authority under Virginia Code, the Commissioner has available a list of persons, firms and corporations licensed to do business in Loudoun County. This list contains only the owner name of all currently licensed businesses. This list is available here.
A list of businesses whose owners have opted to have their information released is available upon request. If you would like a copy of the list, please contact the Business Tax Division in the Commissioner of the Revenue’s office by email or by phone at 703-777-0260.
You should be aware that the Commissioner of the Revenue's office licenses building trades contractors with projects in Loudoun County, regardless of where the business is physically located. In addition, the office only licenses businesses that are located in Loudoun County, but are outside the incorporated limits of Hamilton, Hillsboro, Lovettsville, Leesburg, Middleburg, Purcellville and Round Hill. You may wish to contact each of these incorporated towns to obtain information regarding businesses that are licensed and physically located within each town's respective corporate limits.