Wisconsin
http://www.contractors-license.org/wi/wi.htm
Plumbing, electrical, HVAC and building contractors must apply for a license at the state level.
License search: https://app.wi.gov/licensesearch
http://www.contractors-license.org/wi/wi.htm
Plumbing, electrical, HVAC and building contractors must apply for a license at the state level.
License search: https://app.wi.gov/licensesearch