Plumber License Requirements in Idaho
| Licensing Authority | Division of Occupational and Professional Licenses — Plumbing Board (DOPL) |
| License Type | Plumbing Contractor |
| Experience Required | Journeyman: 8,000 hours work experience and 576 hours classroom instruction as a registered apprentice. Contractor: Must hold a journeyman plumber license. |
| Education Substitute | Accredited plumbing or mechanical engineering program may reduce apprenticeship hours |
| Exam Required | Yes — Plumbing Journeyman Exam + Plumbing Contractor Exam |
| Bond Required | Yes — $2,000 |
| Insurance | General liability: required. Workers comp: required with employees |
| Continuing Education | Not required |
| Processing Time | 2-4 weeks |
Fee Breakdown
| Application Fee | $35 |
| Exam Fee | $75 |
| Initial License Fee | $147 |
| Est. Initial Total | $257 |
Exam Requirements
Plumbing Journeyman Exam
Plumbing Contractor Exam
Exam provider: PSI
License Tiers
Plumbing Apprentice
Must register before beginning work
Exam: Not required
Journeyman Plumber
8,000 hours work experience + 576 hours classroom instruction
Exam: Required
Plumbing Contractor
Must hold journeyman license
Exam: Required
Frequently Asked Questions
Do I need a plumber license in Idaho?
Yes, Idaho requires a statewide plumber license through the Division of Occupational and Professional Licenses — Plumbing Board.
How much does a plumber license cost in Idaho?
The estimated initial cost is $257, including application, exam, and license fees. A $2,000 surety bond is also required.
What experience do I need for a plumber license in Idaho?
Journeyman: 8,000 hours work experience and 576 hours classroom instruction as a registered apprentice. Contractor: Must hold a journeyman plumber license. Education substitute: Accredited plumbing or mechanical engineering program may reduce apprenticeship hours
What exams are required for a plumber license in Idaho?
You must pass the Plumbing Journeyman Exam and Plumbing Contractor Exam exams. A passing score of 70% is required. Exams are administered by PSI.
Do I need a bond for a plumber license in Idaho?
Yes, a $2,000 surety bond is required. $2,000 compliance surety bond required for plumbing contractors, must be maintained throughout licensing period.
How long does it take to get a plumber license in Idaho?
Processing time is typically 2-4 weeks after submitting a complete application.
Is continuing education required for plumbers in Idaho?
No, Idaho does not currently require continuing education for plumber license renewal.
Next steps
You know the requirements for plumbers in Idaho— here's how to actually pass and apply.
Data last verified: 2026-04-02 | Source: DOPL