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- Plumbing License Law — Texas Occupations Code ch. 1301 (handbook-named: 1301.351, .356, .403, .404, .452, .502, .508, .701, .702)
The Plumbing License Law — Texas Occupations Code Chapter 1301
Every TSBPE written exam is closed book, and the Candidate Handbook tells Journeyman candidates to study nine named sections of the Plumbing License Law: 1301.351, .356, .403, .404, .452, .502, .508, .701 and .702. Learn those cold; the rest of this lesson gives the definitions and enforcement framework the questions are written from.
2018 UPC and 2018 IPC · Reviewed 2026-09-20
1. Who is who — the definitions (1301.002)
| Person | Hours / path | What they may do |
|---|---|---|
| Plumber's apprentice | Registered before assisting; learning the trade as principal occupation | Assists under the supervision of an RMP and the direct supervision of a licensed plumber |
| Tradesman plumber-limited | 4,000 hours as an apprentice under a journeyman/master (or a career-and-technology program) + exam | Plumbing in one- and two-family dwellings under an RMP |
| Journeyman plumber | 8,000 hours under the supervision of an RMP + exam | Installs, changes, repairs, services, renovates, or supervises — under an RMP |
| Master plumber | Journeyman 2 years (HB 3214, eff. Sept. 1, 2025 — was 4), or 1 year + a DOL Office of Apprenticeship (or Board-accepted) training program + exam | Design, planning, superintending; performs or supervises plumbing |
| Responsible master plumber (RMP) | A master who lets one plumbing company use the license, may obtain permits, assumes responsibility for the work, and has filed the certificate of insurance | The only person who may offer plumbing to the public without supervision |
| Plumbing inspector | Employed by or contracted with a political subdivision or state agency + exam; no financial or advisory interest in a plumbing company | Inspects plumbing under health/safety laws and plumbing/gas codes |
| Residential utilities installer | 2,000 hours as an apprentice under a master; registered | Yard water service piping and building sewers for one- and two-family dwellings under an RMP |
| Drain cleaner | 4,000 hours as a drain cleaner-restricted registrant under an RMP | Installs cleanouts; removes and resets p-traps to clear drains and sewers |
| **Drain cleaner- |
Preview
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