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How to get a plumbing license in Delaware

Edited by John Voll. Last verified .

Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation licenses plumbing contractors in Delaware. The Professional and Occupational Licensing, Delaware Division of Professional Regulation lists 940 active plumbing individual records as of September 29, 2026.

Who licenses plumbing work in Delaware

CredentialState license
BoardDelaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation official statement
Official lookupSearch plumbing licenses
License typesMaster Plumber

How to get licensed

  1. Apply to Delaware Board of Plumbing as a Master Plumber.
    Board page
  2. Written standardized master plumber exam given by the vendor ProV, plus an apprenticeship by-pass exam for applicants without a journeyman certificate. source
  3. Experience: 7 years of work under a master licensee, or 2 years after a journeyman apprenticeship certificate. source
  4. Pay the master Plumber application fee of $173: $173. source
  5. Renewed every two years; Plumbing and HVACR licenses expire October 31 of even years. source

Plumbing requirements in Delaware

Plumbing: exam, experience, bond, insurance, renewal and feesSources checked October 6, 2026
ExamWritten standardized master plumber exam given by the vendor ProV, plus an apprenticeship by-pass exam for applicants without a journeyman certificate. source
Experience7 years of work under a master licensee, or 2 years after a journeyman apprenticeship certificate. source
BondNot found on an official source.
InsuranceNot found on an official source.
RenewalRenewed every two years; Plumbing and HVACR licenses expire October 31 of even year. source
ReciprocityLicense by reciprocity for holders in good standing from a state with substantially similar standards; otherwise 7 years of practice after licensure is required. source
Fees
  • Master Plumber application fee of $173. source
  • Temporary Plumber or HVACR license fee of $40. source
  • Late renewal fee of 50% of the renewal fee (the renewal amount itself is set at renewal time). source

Hiring a plumbing contractor?

See every official lookup in Delaware, which board covers which trade, and what to check before you hire.

How to verify a contractor license in Delaware

Questions

Do you need a plumbing license in Delaware?
Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation licenses plumbing contractors in Delaware.
How do I check a plumbing license in Delaware?
The Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation keeps the record for plumbing contractors in Delaware. Use the official lookup on this page, and treat the board's own record as final.
How much does a plumbing license cost in Delaware?
Master Plumber application fee of $173. Temporary Plumber or HVACR license fee of $40. Late renewal fee of 50% of the renewal fee (the renewal amount itself is set at renewal time).
How much experience do you need for a plumbing license in Delaware?
7 years of work under a master licensee, or 2 years after a journeyman apprenticeship certificate.
How often does a plumbing license renew in Delaware?
Renewed every two years; Plumbing and HVACR licenses expire October 31 of even years.

Other trades in Delaware

Plumbing license in other states

Sources

This is not a government site. The licensing board's own record governs; always confirm on the official lookup. Information as of October 6, 2026.