State plumbing guide · OK
Plumbing in Oklahoma
Oklahoma licenses plumbers statewide through its Construction Industries Board, and a state commission sets the minimum plumbing code. Clay soils, hard freezes and severe storms shape the most common calls.
- Median home built
- 1982
- Built before 1980
- 48%
- Owner-occupied
- 66%
- Winter
- Regular hard freezes
- General statewide rating
- Plumbing code
- IPC
- City guides
- 2
Housing figures: U.S. Census Bureau, ACS 2024 1-year (B25035, B25034).
Oklahoma city plumbing guides
How to check a plumber's license in Oklahoma
The Oklahoma Construction Industries Board licenses master plumbers, journeyman plumbers and plumbing contractors under its plumbing rules (OAC Title 158, Chapter 30). [1]
Which plumbing code applies in Oklahoma
The Oklahoma Uniform Building Code Commission adopts the International Plumbing Code as the statewide minimum code for commercial plumbing; its adopted edition is the 2018 IPC, as amended. [2]
Seasonal problems to plan for in Oklahoma
- Winter
- Ice storms and hard freezes; frozen and burst pipes in attics and exterior walls.
- Spring
- Severe storms and heavy rain; sewer backups and flooded basements or crawl spaces.
How old Oklahoma's homes are
Statewide, the median home was built in 1982 and 48% of homes predate 1980. Homes like that were usually built with copper or CPVC supply, plastic drains, and in some homes gray polybutylene supply pipe. The city guides below show how much that varies within the state.
Regions of Oklahoma
Central Oklahoma
Oklahoma City: clay soils, slab homes, hard freezes and severe storms.
Oklahoma plumbing questions
How do I check a plumber's license in Oklahoma?
Plumbers and plumbing contractors are licensed by the Oklahoma Construction Industries Board; ask for the license number and verify it with the CIB.
Which plumbing code applies in Oklahoma?
The Oklahoma Uniform Building Code Commission sets the statewide minimum code, based on the International Plumbing Code (2018 edition, as amended). Cities may add local requirements, so confirm with your building department.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035, B25034) · checked 2026-10-01
- Oklahoma Construction Industries Board, Title 158 Chapter 30 · checked 2026-10-01
- Oklahoma Uniform Building Code Commission, IPC 2018 Permanent Rule · checked 2026-10-01