Plumber License Requirements in Maine
| Licensing Authority | Plumbers' Examining Board, Office of Professional and Occupational Regulation (PEB/OPOR) |
| License Type | Journeyman Plumber / Master Plumber |
| Experience Required | Journeyman: 4,000 hours (2 years) as licensed Trainee or 2,000 hours (1 year) as Journeyman-in-training. Master: 2,000 hours (1 year) as licensed Journeyman or 8,000 hours (4 years) as Trainee under Master. |
| Education Substitute | Approved plumbing apprenticeship program may satisfy experience requirements |
| Exam Required | Yes — Journeyman Plumber Exam + Master Plumber Exam |
| Bond Required | No |
| Insurance | General liability: recommended. Workers comp: required with employees |
| Continuing Education | Not required |
| Processing Time | 4-6 weeks |
Fee Breakdown
| Application Fee | $100 |
| Exam Fee | $65 |
| Initial License Fee | $200 |
| Background check | $21 |
| Est. Initial Total | $386 |
Renewal: $200 every 2 years
Exam Requirements
Journeyman Plumber Exam
80 questions3 hoursPass: 70% Journeyman / 75% Master
Maine Plumbing CodePlumbing systemsSafety practices
Master Plumber Exam
100 questions3 hoursPass: 70% Journeyman / 75% Master
Maine Plumbing CodeAdvanced plumbing systemsBusiness practices
Exam provider: PROV Inc.
License Tiers
Trainee Plumber
Entry level — registered with the Examining Board
Exam: Not required
Journeyman Plumber
4,000 hours (2 years) as licensed Trainee or 2,000 hours as Journeyman-in-training
Exam: Required
Master Plumber
2,000 hours (1 year) as Journeyman or 8,000 hours (4 years) as Trainee under Master
Exam: Required
Notes
- Trainee application fee is $100
- All license types require background check ($21)
Frequently Asked Questions
Do I need a plumber license in Maine?
Yes, Maine requires a statewide plumber license through the Plumbers' Examining Board, Office of Professional and Occupational Regulation.
How much does a plumber license cost in Maine?
The estimated initial cost is $365, including application, exam, and license fees.
Data last verified: 2026-04-02 | Source: PEB/OPOR