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Plumber
Total cost: $288
Governing Authority
Mechanical Safety and Licensing Board (under New Hampshire Office of Professional Licensure and Certification — OPLC)
Official website →Yes
State Licensed?
8,000
Apprentice Hours
3
License Levels
$288
Total Fees
6 hrs
CE Hours
2021 International Plumbing Code (IPC) with NH amendments (adopted effective July 1, 2024)
Code Version
Get the New Hampshire Plumber Roadmap — every step, fee, and deadline mapped out. — every step mapped out.
Get the Roadmap — $20Apprentice Registration Fee
$88-$90
Sources vary; renewal: $80-$88
Journeyman License Fee
$198
Application fee (per ServiceTitan); exam fee: $90 separate; biennial renewal: $180
Master Plumber License Fee
$310
Application fee + $10 License Verification Fee; exam fee: $90 separate; biennial renewal: $300
Exam Fee
$90
Plumbing exam fee
Renewal Fee
$180 (journeyman) / $300 (master)
Biennial
Regulation Status
VerifiedState Licensed
Yes
Regulation Level
state
License Types Available
State-Level Licensing Required
Regulated by the Mechanical Safety and Licensing Board (under New Hampshire Office of Professional Licensure and Certification — OPLC)
Apprenticeship Program
8,000
Total Hours
4 yrs
Duration
576
Classroom Hours
7,424
OJT Hours
Registered Apprenticeship Program Required
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Experience Required
Registration required; no prior experience
No exam required
Additional Requirements
Experience Required
4-year plumbing apprenticeship (8,000 hours per ServiceTitan — CONFLICTING: 3,000 hours per other source; verify against OPLC rules); must obtain apprenticeship completion certificate + letter from supervising licensed master plumber
Exam required
Additional Requirements
Experience Required
Must hold journeyman license for at least 6 months (unusually short — most states require 1-4 years); must provide letter from licensed master plumber certifying competence
Exam required
Additional Requirements
Exam Information
VerifiedJourneyman Exam
RequiredMaster Exam
RequiredExam Provider
Prov (effective 5/12/2025)
Plumbing Code Version
2021 International Plumbing Code (IPC) with NH amendments (adopted effective July 1, 2024)
Open Book Exam
Passing Score
70%
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Overall licensing difficulty: 25/100
Study recommendation: 1–2 weeks of focused review is usually sufficient
Practice with realistic exam questions
Plumber Licensing Exam
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Difficulty rating based on education, exam, and experience requirements. Individual experience may vary.
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Minimum Age
Education
Background Check
Insurance Required
Bonding Required
Not sure if you need a plumber license? Check whether your state requires one.
New Hampshire has 25% above average — nationally the ratio is 1 per 746 residents.
New Hampshire is one of the most saturated plumbers markets in the country.
New Hampshire ranks #12 out of 51 states by plumbers per capita.
| Fee | Amount |
|---|---|
Apprentice Registration Sources vary; renewal: $80-$88 | $88-$90 |
Journeyman License Application fee (per ServiceTitan); exam fee: $90 separate; biennial renewal: $180 | $198 |
Master License Application fee + $10 License Verification Fee; exam fee: $90 separate; biennial renewal: $300 | $310 |
Exam Fee Plumbing exam fee | $90 |
Renewal Fee Biennial | $180 (journeyman) / $300 (master) |
Total Initial Fees Journeyman: application ($198) + exam ($90) = $288; Master: application ($310) + verification ($10) + exam ($90) = $410 | $288 |
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Renewal & CE Requirements
Verified2 years
Renewal Period
6
CE Hours Required
$180 (journeyman) / $300 (master)
Renewal Fee
Continuing Education Required
Regulatory Board
Biennial; initial applications must be mailed (check/money order only); renewals can be online; late renewal (expired >1 year) = must reapply as new applicant
Out-of-State Reciprocity
VerifiedAccepts Out-of-State Licenses
Transfer Type
Endorsement
Additional Requirements for Transfer
Most states require plumbers to pass the local exam or apply for endorsement when transferring an out-of-state license. Requirements vary by state.
Moving to another state? Use our Transfer Tool to see what you need →
Compare New Hampshire with other states →
See how requirements, costs, and timelines differ across all 50 states.
NH has one of the broadest reciprocity lists in the country (30+ states for journeyman) and an unusually short master requirement (6 months as journeyman). Has a unique apprentice First Year Bypass Test.
Master plumber requires only 6 MONTHS as journeyman — unusually short (most states require 1-4 years)
One of the broadest reciprocity lists in the country — 30+ states for journeyman plumber
Codes updated to 2021 IPC with NH amendments effective July 1, 2024
Exam provider changing to Prov (effective 5/12/2025)
Apprentice First Year Bypass Test available — 100 questions, 70% passing, bypasses first year of instruction
CONFLICTING experience hours for journeyman (8,000 vs 3,000) — flagged for OPLC verification
Initial applications must be mailed (personal check, money order, or cashier's check only); renewals online
Late renewal (expired >1 year) = must apply as new applicant
CE: 6 hours per cycle; CE Broker system used for tracking
Biennial renewal
Uses 2021 IPC with NH amendments
Plumber Schools in New Hampshire
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Plumber requirements in New Hampshire verified against Mechanical Safety and Licensing Board (under New Hampshire Office of Professional Licensure and Certification — OPLC), April 2026.
Accessed 2026-03-24
Accessed 2026-03-06