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Plumber
Total cost: $127
Governing Authority
Maryland Board of Plumbing (under Maryland Department of Labor — Division of Occupational and Professional Licensing)
Official website →Yes
State Licensed?
8,000
Apprentice Hours
6
License Levels
$127
Total Fees
No continuing education required hrs
CE Hours
Maryland State Plumbing Code (with IPC/IFGC versions available for certain jurisdictions)
Code Version
Get the Maryland Plumber Roadmap — every step, fee, and deadline mapped out. — every step mapped out.
Get the Roadmap — $20Apprentice Registration Fee
$18.50
Effective July 1, 2025
Journeyman License Fee
$43.50
Effective July 1, 2025
Master Plumber License Fee
$87.50
Effective July 1, 2025; insurance required: $400K total minimum
Exam Fee
$65
Plumbing exam fee
Renewal Fee
$70
Biennial; approximately $70 per Maryland OneStop
Regulation Status
VerifiedState Licensed
Yes
Regulation Level
state
License Types Available
State-Level Licensing Required
Regulated by the Maryland Board of Plumbing (under Maryland Department of Labor — Division of Occupational and Professional Licensing)
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
Must hold apprentice license for at least 4 years; must complete 7,500 hours of training under direction and control of a licensed master plumber
Exam required
Additional Requirements
Experience Required
Must hold journey license for at least 2 years; must complete 3,750 hours of training under direction and control of a licensed master plumber
Exam required
Additional Requirements
Exam Information
VerifiedJourneyman Exam
RequiredMaster Exam
RequiredExam Provider
PSI
Plumbing Code Version
Maryland State Plumbing Code (with IPC/IFGC versions available for certain jurisdictions)
Open Book Exam
Passing Score
70%
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Overall licensing difficulty: 29/100
Study recommendation: 1–2 weeks of focused review is usually sufficient
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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.
Maryland has 27% above average — nationally the ratio is 1 per 746 residents.
Maryland is one of the most saturated plumbers markets in the country.
Maryland ranks #10 out of 51 states by plumbers per capita.
| Fee | Amount |
|---|---|
Apprentice Registration Effective July 1, 2025 | $18.50 |
Journeyman License Effective July 1, 2025 | $43.50 |
Master License Effective July 1, 2025; insurance required: $400K total minimum | $87.50 |
Exam Fee Plumbing exam fee | $65 |
Renewal Fee Biennial; approximately $70 per Maryland OneStop | $70 |
Total Initial Fees Journey: apprentice ($18.50) + exam ($65) + license ($43.50) = $127 | $127 |
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Renewal & CE Requirements
Verified2 years
Renewal Period
No continuing education required
CE Hours Required
$70
Renewal Fee
No CE Requirement
Regulatory Board
Biennial; approximately $70 per Maryland OneStop
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 Maryland with other states →
See how requirements, costs, and timelines differ across all 50 states.
Maryland has 3 separate plumbing licensing authorities (State Board, Baltimore County Board, WSSC) — a state license does NOT cover Baltimore County or WSSC service areas. License types combine plumber and gas fitter designations. Reciprocity exists only with Delaware for master plumber licenses.
CRITICAL: Maryland has 3 separate licensing authorities — State Board, Baltimore County Plumbing Board, and WSSC. A state license does NOT automatically work in Baltimore County or WSSC areas.
License types include combined Plumber/Gas Fitter designations
Journey plumber requires 7,500 hours (not generic 8,000) + 32 hours backflow prevention training
Fees updated effective July 1, 2025
Master requires $400,000 total insurance ($300K liability + $100K property damage)
Two exam versions: Standard OR IPC/IFGC (some counties require IPC/IFGC)
Reciprocity with Delaware ONLY (master plumber only)
Uses Maryland State Plumbing Code
CE not explicitly mandated statewide
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Plumber requirements in Maryland verified against Maryland Board of Plumbing (under Maryland Department of Labor — Division of Occupational and Professional Licensing), April 2026.
Accessed 2026-03-24
Accessed 2026-03-06