Oklahoma — plumbing code & licensing
Verified
The code
| Code family | IPC |
| Edition in force | International Plumbing Code, 2024 Edition (first printing), adopted as amended and modified in OAC 748:20-16 as the statewide minimum code for commercial plumbing construction, under 59 O.S. 1000.23 |
| Effective date | 2026-09-14 |
| Adopted by | Oklahoma Uniform Building Code Commission (OUBCC) |
| Adoption source | https://oklahoma.gov/content/dam/ok/en/oubcc/documents/rules/2026%2009%2014%20IPC%202026%20Permanent%20Rule%20.pdf |
| State amendments | Amendments ride in the adoption document itself — https://oklahoma.gov/content/dam/ok/en/oubcc/documents/rules/2026%2009%2014%20IPC%202026%20Permanent%20Rule%20.pdf |
Licensing
| Model | State individual and contractor licensing by the Construction Industries Board under the Plumbing License Law of 1955 (59 O.S. 1001 et seq.), rules at OAC Title 158 ch. 30: plumbing contractor (unlimited and residential), journeyman plumber (unlimited and residential), registered apprentice |
| Authority | Oklahoma Construction Industries Board (CIB) |
| Licensing source | https://oklahoma.gov/content/dam/ok/en/cib/documents/your-industry/plumbing-industry/title_158_chapter_30.pdf |
| License classes | https://oklahoma.gov/content/dam/ok/en/cib/documents/your-industry/plumbing-industry/title_158_chapter_30.pdf |
Permits & inspections
Standard of installation (OAC 158:30-1-4): unlimited journeyman/contractor classes work to the IPC, the IFGC, and the plumbing portion of the IRC as adopted by the OUBCC; residential journeyman/contractor classes work to the IRC plumbing portions only.
How this record was verified
| Adoption | Verified |
| Amendments | Verified |
| Licensing | Verified |
| Permits & inspections | Verified |
Working notes
SCOPE SPLIT, recorded plainly: the OAC 748:20-16 IPC adoption is framed as the statewide minimum for COMMERCIAL plumbing construction; one- and two-family residential plumbing rides the IRC plumbing chapters as adopted by the OUBCC (the CIB standard-of-installation rule confirms the split). The 2024 IPC permanent rule (43 Ok Reg, eff. 9-14-26) replaced the IPC 2018 adoption (38 Ok Reg 2726, eff. 9-14-21) on September 14, 2026, so the 2024 edition is in force on the retrieval date.
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.