Delaware plumber license & renewal
The requirements, the timing and the official sources. Everything we’ve verified, in one place.
License fee
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Not verified yet
Required hours
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Not verified yet
Exam
The Board approves candidates to sit for the master examination.
Renewal
Plumbing/HVACR licenses expire on October 31 of even years (e.g., 2018, 2020).
Before you begin
Agency guidance
CE varies for the first renewal and for dual license holders; consult the Board's CE instructions.
Verified 2026-10-24 — source and quotation
The amount of Continuing Education (CE) that you are required to complete depends when your license was issued during a full licensure period.Official source
Agency guidance
Renew through DELPROS using the Board's renewal instructions: https://dpr.delaware.gov/boards/plumbers/renew/
Verified 2026-10-24 — source and quotation
access your online renewal application in DELPROSOfficial source
How to get this license
Use the agency’s requirements below to plan your next steps. Missing details stay marked.
Start with the licensing authority
Licensing board
Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners
Verified 2026-10-24 — source and quotation
Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners
Official sourceOfficial agency page
Verified 2026-10-24 — source and quotation
The Board issues master plumber, master HVACR and master restricted HVACR licenses.
Official sourceCheck the qualifications
Experience
Master examination applicants with an apprenticeship journeyman certificate need two years under a master after the certificate; applicants without it need seven years under a master and the apprenticeship bypass examination.
Verified 2026-10-24 — source and quotation
Proof of at least two years work experience under the supervision of a master licensee after receiving Certificate. ... Proof of at least seven years work experience under supervision of a master licensee. ... take the Apprenticeship By-Pass Exam
Official sourceExam
The Board approves candidates to sit for the master examination.
Verified 2026-10-24 — source and quotation
When the Board approves you to sit for the Master exam, the Board office will send you a candidate information packet.
Official sourceReview fees and apply
Exam fee
Not verified yet
License fee
Not verified yet
Apply with the agency
Verified 2026-10-24 — source and quotation
Go to: https://delpros.delaware.gov/OH_HomePage.
Official source
Reciprocity
Master licenses from Connecticut, Iowa and Maryland have substantially similar standards; applicants from these jurisdictions do not need to submit experience proof.
Verified 2026-10-24 — source and quotation
Connecticut, Iowa, Maryland | are substantially similar | do not need to submit any proof of experience.Official source
Official sources and verification (11)
Last verified 2026-10-24. Each quotation supports the corresponding published value.
Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration ExaminersOfficial source
Verified 2026-10-24
The Board issues master plumber, master HVACR and master restricted HVACR licenses.Official source
Verified 2026-10-24
Proof of at least two years work experience under the supervision of a master licensee after receiving Certificate. ... Proof of at least seven years work experience under supervision of a master licensee. ... take the Apprenticeship By-Pass ExamOfficial source
Verified 2026-10-24
When the Board approves you to sit for the Master exam, the Board office will send you a candidate information packet.Official source
Verified 2026-10-24
Plumbing/HVACR licenses expire on October 31 of even years (e.g., 2018, 2020).Official source
Verified 2026-10-24
For all subsequent renewals, you will owe 5 hours, unless you have dual licenses.Official source
Verified 2026-10-24
Connecticut, Iowa, Maryland | are substantially similar | do not need to submit any proof of experience.Official source
Verified 2026-10-24
The amount of Continuing Education (CE) that you are required to complete depends when your license was issued during a full licensure period.Official source
Verified 2026-10-24
Keep exploring.
Same license in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Last verified 2026-10-24.
Official sources (5)
Not legal or tax advice. Confirm with the official agency before filing.