Plumbers in Hawaii

How Hawaii licenses plumbers

Plumbers are licensed by the state.

Who licenses: Hawaii Board of Electricians and Plumbers (Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division)

License types: Journey Worker Plumber, Master Plumber.

Businesses: A separate contractor's license from Hawaii's Contractors License Board (the C-37 Plumbing contractor classification or a C-37 specialty) is required to contract for plumbing work, with only a narrow exception for licensed plumbers.

Check a license: mypvl.dcca.hawaii.gov

Use the state's license search to confirm both the company's contractor license (C-37 Plumbing) and the individual plumber's license, and check that the contractor has insurance on file.

We could not confirm every detail from Hawaii’s own sources, so treat this as a starting point and check with the agency.

Sources: cca.hawaii.gov, cca.hawaii.gov, cca.hawaii.gov, cca.hawaii.gov. Checked October 2026 from official sources. This is not legal advice.

Before you hire

Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – water heaters, repiping and sewer lines often do.

Eight questions to ask every plumber