Applications for Mechanical Safety and Licensing
This resource page provides applications for licensure, required forms to be completed and submitted with applications, education or certification requirements for renewal of a license.
Mechanical Safety and Licensing Home
Initial License
Apprentice and Trainee Applications
- Apprentice/Trainee (Gas) - Application Packet
- Apprentice/Trainee (Plumbing) - Application Packet
- Apprentice/Trainee - Endorsement Letter
Personal License Applications
- Initial Application for License (Gas) - Application Packet
- Initial Plumbing - Application Packet
- Application for Voluntary Certification of Oil Heating Technicians
Business Application
Please confirm the Mechanical Business Entity from our Fee page.
General Forms
- Affidavit for Proof of Field/Work Experience
- Apprentice/Trainee - Endorsement Letter
- Request a Mechanical Inspection
Mail your completed application, required forms and payment to:
Office of Professional Licensure & Certification
7 Eagle Square
Concord, NH 03301
Forms of Payment Accepted for Paper Applications: Personal Check, Money Order or Cashier's Check
Renewal of License
Note: You cannot renew an expired license in the portal. Please use the reinstatement application found below under REINSTATEMENT.
Visit: Online Applications for Renewal (You can also use this link to check the status of your application)
About Renewing Your License Online
If you are unsure of any required credits for renewal, please contact OPLC Mechanical Licensing Representatives at: oplclicensing5@oplc.nh.gov
Reinstatement of License
- If your license has been expired less than 1 year, please complete this application and mail to the office with your reinstatement fee.
- If your license has been expired for more than 1 year, please complete the initial application found at the top of this page.
- Reinstatement Application
For information on reinstating a License, please contact Customer Support at 603-271-2152.
Other Requirements for Licensure
For other additional forms and documents