Idaho — plumbing code & licensing
Verified
The code
| Code family | state-written |
| Edition in force | Idaho State Plumbing Code - the 2015 Uniform Plumbing Code, including Appendices A, B, C, D, E, G, I, J, K and L, with Idaho amendments, adopted by the Idaho Plumbing Board at IDAPA 24.39.20.600 under Idaho Code 54-2601 |
| Effective date | 2023-03-28 |
| Adopted by | Idaho Plumbing Board (Division of Occupational and Professional Licenses), under Idaho Code Title 54, ch. 26 |
| Adoption source | https://adminrules.idaho.gov/rules/current/24/243920.pdf |
| State amendments | Amendments ride in the adoption document itself — https://adminrules.idaho.gov/rules/current/24/243920.pdf |
Licensing
| Model | State individual and contractor licensing under Idaho Code Title 54, ch. 26 and IDAPA 24.39.20: Apprentice registration, Journeyman Plumber, Plumbing Contractor, and Specialty Contractor / Specialty Journeyman certificates (including appliance and water-pump specialties) |
| Authority | Idaho Plumbing Board, Division of Occupational and Professional Licenses (DOPL) |
| Licensing source | https://dopl.idaho.gov/plb/ |
| License classes | https://dopl.idaho.gov/plb/plb-licensing/ |
Permits & inspections
The plumbing rules themselves set the permit and inspection process for plumbing work administered by the Division (IDAPA 24.39.20, sections 500-501, Permits and Inspections); plumbing permits are purchased through DOPL, and local jurisdictions administer their own programs where authorized.
How this record was verified
| Adoption | Verified |
| Amendments | Verified |
| Licensing | Verified |
| Permits & inspections | Verified |
Working notes
Effective-date note: 2023-03-28 is the IDAPA date stamp on the current rule chapter (24.39.20, reissued under DOPL in the zero-based-regulation review), including section 600's adoption of the 2015 UPC - it is the rule's date, not a separately proclaimed code effective date. Governance note: plumbing moved from the Division of Building Safety (old IDAPA 07.02.05) to DOPL's Idaho Plumbing Board (IDAPA 24.39.20); older DBS-hosted material is superseded. Journeyman applicants must pass the IAPMO examination (via PSI) before applying to DOPL. Reciprocity with Washington for journey level plumbers is noted on Washington's L&I page.
Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.