Requirements, license levels, and the issuing authority — sourced from Indiana's official board.
Indiana licenses plumbers through Indiana Plumbing Commission, Indiana Professional Licensing Agency (IPLA/PLA).
| Requirements | Apprentice: age 17+, enrolled in an approved apprenticeship program. Journeyman: age 18+, complete an approved apprenticeship OR hold an out-of-state plumbing license with 4 years experience; pass exam (7 attempts within 2 years). Plumbing Contractor: age 18+, via 4-year apprenticeship, out-of-state license, or 4 years experience in a plumbing business under a licensed contractor; pass exam. |
| Reciprocity | Reciprocity is NOT available for journeyman and contractor plumbers; out-of-state licensees must apply and pass Indiana's exam. |
| Renewal | Biennial. Apprentices renew October 1 (even years, $10). Journeymen/Contractors renew December 31 (odd years). No continuing education requirement. |
Sources: www.in.gov · www.in.gov. Always confirm current requirements with the issuing authority.
New licenses, ladder upgrades, classification changes and lapses, by market and credential tier. Read the quarterly free, or license the underlying data.