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How to get a plumber license in Delaware

Requirements, license levels, and the issuing authority — sourced from Delaware's official board.

Statewide board, but the state-issued plumbing credential is the Master Plumber license (no separate statewide journeyman license); apprentices are registered.

Issuing authority: Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation (24 Del. C. Ch. 18). Official page: https://dpr.delaware.gov/boards/plumbers

License levels in Delaware

Delaware plumber licensing at a glance

RequirementsDelaware licenses plumbers primarily at the Master level. Master Plumber applicants must document required trade experience/journey-level work under a licensed master and pass the exam; apprentices register and work under supervision.
ReciprocityNot stated on the board landing page.
RenewalRenewed through the DELPROS licensing system; continuing education requirements apply beginning with the 2026 renewal cycle (specific hours set in Board regulations, 24 Del. Admin. C. 1800).
NotesStatewide board, but the state-issued plumbing credential is the Master Plumber license (no separate statewide journeyman license); apprentices are registered.

Questions

Do you need a license to work as a plumber in Delaware?
Statewide board, but the state-issued plumbing credential is the Master Plumber license (no separate statewide journeyman license); apprentices are registered.
What plumber license levels does Delaware have?
The levels are Master Plumber, Master HVACR, Master Restricted HVACR, Apprentice (registered).
How do you get licensed as a plumber in Delaware?
Delaware licenses plumbers primarily at the Master level. Master Plumber applicants must document required trade experience/journey-level work under a licensed master and pass the exam; apprentices register and work under supervision.
Does Delaware have plumber license reciprocity?
Not stated on the board landing page.

Related

Supply
How many plumbers in DelawareHub
All Delaware trades pages

Sources: dpr.delaware.gov · regulations.delaware.gov. Always confirm current requirements with the issuing authority.

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