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Plumber
Total cost: $215
Governing Authority
Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners (under Division of Professional Regulation)
Official website →Yes
State Licensed?
8,000
Apprentice Hours
1
License Levels
$215
Total Fees
None
CE Hours
International Plumbing Code (IPC)
Code Version
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Get the Roadmap — $20Apprentice Registration Fee
$30
Apprentice registration fee
Master Plumber License Fee
$173
Master plumber application fee (per FieldPulse; $141 per HousecallPro — verify at dpr.delaware.gov/boards/plumbers/fees/); applications submitted online via DELPROS
Exam Fee
$110
Plumbing exam fee
Renewal Fee
$50
Annual or biennial renewal fee
Regulation Status
VerifiedState Licensed
Yes
Regulation Level
state
License Types Available
State-Level Licensing Required
Regulated by the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners (under Division of Professional Regulation)
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
Delaware does NOT issue a separate state-level journeyman license. Journeyman-level workers work under the supervision of a master plumber.
Exam required
Additional Requirements
Experience Required
Path 1 (Apprenticeship): Completed plumbing apprenticeship in ANY state meeting Federal BAT Standards + journeyman certificate + 2 years work under master plumber. Path 2 (Experience): 7 years work under master plumber + apprenticeship equivalency test (bypass exam) from Delaware vo-tech school. Both paths require passing the written standardized examination.
Exam required
Additional Requirements
Exam Information
VerifiedJourneyman Exam
RequiredMaster Exam
RequiredExam Provider
PSI
Plumbing Code Version
International Plumbing Code (IPC)
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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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.
Delaware has 10% above average — nationally the ratio is 1 per 746 residents.
Delaware has above-average plumbers density — competitive market.
Delaware ranks #25 out of 51 states by plumbers per capita.
| Fee | Amount |
|---|---|
Apprentice Registration Apprentice registration fee | $30 |
Master License Master plumber application fee (per FieldPulse; $141 per HousecallPro — verify at dpr.delaware.gov/boards/plumbers/fees/); applications submitted online via DELPROS | $173 |
Exam Fee Plumbing exam fee | $110 |
Renewal Fee Annual or biennial renewal fee | $50 |
Total Initial Fees Estimated total for apprentice registration + journeyman license + exam | $215 |
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Renewal & CE Requirements
Verified2 years
Renewal Period
—
CE Hours Required
$50
Renewal Fee
No CE Requirement
Renewal fee per 2 years
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 Delaware with other states →
See how requirements, costs, and timelines differ across all 50 states.
Delaware only issues a Master Plumber license at the state level — there is no separate journeyman license. Pennsylvania is specifically excluded from reciprocity.
Delaware issues ONLY a Master Plumber license at the state level — no separate state journeyman license
Two paths to Master: (1) Apprenticeship + 2 years under master, or (2) 7 years experience + bypass exam from DE vo-tech
CE requirements updated March 11, 2025 (Regulation 5.0) for 2026 renewal cycle
Applications submitted online via DELPROS portal (delpros.delaware.gov)
Reciprocity available but Pennsylvania is specifically EXCLUDED
Apprentice requirements: Must be 18+, HS diploma/GED, register with DE DOL Office of Apprenticeship and Training, 4 years of training with at least 144 hours/year classroom
Follows International Plumbing Code (IPC)
Biennial renewal; can be placed on inactive status for up to 5 years
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Plumber requirements in Delaware verified against Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners (under Division of Professional Regulation), April 2026.
Accessed 2026-03-06
Accessed 2026-03-06