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Office of Public Safety and Inspections (OPSI) Licensing

Information on getting a first-time license or license renewal

Steps for obtaining or renewing your construction supervisor, hoisting, hydraulic, refrigeration and construction related licenses.

Contact Information


Main Office
1000 Washington St, Suite 710, Boston, MA 02118


If looking for a status update on a license renewal, please put your full OPSI license number, including prefix, in the subject line. Email Office of Public Safety and Inspections, Division of Occupational Licensure at OPSI-info@mass.gov

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