The Texas Master Plumber Guide

What Is the Texas Master Plumber License?

The master plumber license verifies that a plumber can install, alter and repair plumbing systems — water supply, drainage, vents, fixtures, water heaters and fuel-gas piping — in compliance with code, and can take responsibility for that work. In Texas, the license is regulated by the Texas State Board of Plumbing Examiners (TSBPE), and the examination is administered by Pearson VUE (Pearson Professional Assessments) at computer-based testing centers. This is a change worth noting if you have seen older study material: Texas is no longer under PSI — the vendor and the registration path have moved to Pearson.

Where most state master exams let you lean on a codebook, Texas deliberately does not. The exam is closed book: dictionaries, books, papers and reference materials of any kind are not permitted, and there is no practical portion — the test is written-only, delivered on a computer. That single fact changes the whole study problem. A code-navigation strategy will not save you on exam day, because there is no code in the room to navigate. Texas is a recall exam: the board expects you to carry the code requirements, table values, sizing data, formulas, safety standards and license law in your head.

The scope is correspondingly wide. Beyond the plumbing code itself, the official blueprint reaches into OSHA construction safety (29 CFR 1926), the Texas Accessibility Standards, LPG piping under NFPA-54, plumbing mathematics and Texas license law — roughly 60% of the written exam sits outside the plumbing code columns most plumbers have drilled before. You are already an experienced plumber; the challenge in Texas is breadth plus recall, not code lookup speed.

Eligibility: The TSBPE Application Comes First

Texas does not let you walk into a Pearson VUE center and sit the master exam on your own. The Texas State Board of Plumbing Examiners (TSBPE) must approve your application and confirm that your experience meets the state's requirements before Pearson VUE will let you register and schedule:

• Application first: submit your master plumber application to TSBPE with the supporting documentation of your plumbing experience.
• Application fee: the TSBPE application carries a $175 fee.
• Board review: TSBPE evaluates your credentials against the eligibility rules in effect when you apply.
• Eligibility notice: once approved, you receive the go-ahead to register for the exam through Pearson VUE at pearsonvue.com/us/en/tsbpe.html.
• Confirmation: the eligibility standard is set by the board, not by the exam vendor — contact TSBPE for the current eligibility requirements before you apply.

Most master candidates come up from journeyman-level experience, and the master exam assumes that foundation before it tests master-level breadth. The board — not Pearson VUE — decides whether your documented experience meets the bar, so get your approval before you invest in prep or book a test date. The approval is the gate that everything else hangs on.

Exam Format: 308 Items, 360 Minutes, Closed Book

The Texas Master Plumber exam is a single, written-only, computer-based session delivered by Pearson VUE for the TSBPE program at pearsonvue.com/us/en/tsbpe.html. At a glance:

Three details are worth reading twice. First, 308 items in 360 minutes — about 70 seconds per item across a six-hour marathon. There is no codebook to flip through, so pacing is a recall problem, not a lookup problem, and stamina is a real factor: six hours is a long session. Second, the optional 30-minute pause-the-clock break (Master and Inspector exams only) stops the timer, so taking it costs you no testing time — plan for it and pace the session in two halves around it. Third, the pass line is 70% — and because nothing is in the room with you, every question is a pure test of what you have retained.

The closed-book rules are the headline of this exam, so state them plainly: dictionaries, books, papers and reference materials are not permitted. You cannot bring a code, a set of tabs, a formula sheet or a dictionary, and the test center supplies none. Whatever you need to answer — a fixture-unit value, a vent-sizing rule, a slope table figure, an OSHA requirement, an accessibility dimension, an LPG piping clearance, a license-law provision — you must produce from memory.

Official Subject Areas (210-Question Review-Course Blueprint)

The TSBPE review course publishes the subject-area breakdown for the 210 written multiple-choice questions. Because it is the only official per-subject weight published for the Texas exam, study time should track it:

The pattern is unmistakable — and it is unlike code-only states. Plumbing Codes (60) is the single biggest column, but the five non-code subjects — OSHA 29 CFR 1926 (25), Texas Accessibility Standards (25), LPG Piping (25), Plumbing Mathematics (25) and License Law and Board Rules (25) — together total 125 of the 210 questions, almost 60% of the written exam. Add Water Heater Installation (25) and only 85 questions sit in the pure plumbing-code column. A Texas candidate who drills only the plumbing code is preparing for less than half the test. OSHA, accessibility, LPG, math and license law are not afterthoughts here — they are five full 25-question columns, and on a closed-book exam every one of them must be memorized cold.

Sizing-Chart Problems and the Design Problem

The official review course describes more than the multiple-choice core. It includes four sizing-chart problems that test your ability to work with the standard engineering tables:

• Fuel gas pipe sizing
• Water pipe sizing
• Gas appliance vent sizing
• Drainage pipe sizing

Plus a design problem: the design of a three-story sanitary drainage and vent system for 16 fixtures. Where the multiple-choice questions test recognition and recall, these problems test application — laying out a real system and sizing its parts from the governing code and tables. Because the exam is closed book, the sizing data and formulas behind these problems are exactly the kind of content you must carry in memory. Practice them repeatedly: a candidate who can produce a correct three-story drainage-and-vent layout from memory has effectively mastered the densest part of the Texas blueprint.

Code References: Choose IPC or UPC — Then Study Only One

Texas does not lock the exam to a single code family. The official materials list references in either the ICC or IAPMO family, and the exam is not specific to one — which means you get to choose the code you study, and you should choose exactly one. The reference set from the TSBPE review course:

• Plumbing code (choose one family): the 2018 International Plumbing Code (IPC) plus the 2018 International Fuel Gas Code (IFGC) from the ICC — or the 2018 Uniform Plumbing Code (UPC) from IAPMO. The exam is not specific to one code, so studying one family only is the official-intended approach.
• OSHA: the 29 CFR 1926 subparts list — the OSHA construction standards, covering the safety requirements that apply to plumbing construction work.
• NFPA-54: the National Fuel Gas Code, latest edition — the governing standard for the LPG and fuel-gas piping questions.
• Texas Accessibility Standards (TAS): Chapters 1–3 and 6 — the chapters covering the plumbing-fixture accessibility requirements.
• License law and board rules: the License Law, Chapter 1301 sections and the Board Rules, Chapter 365 — the statutes and rules that govern plumbers in Texas.

Two practical takeaways. First, if you have trained on the IPC in a previous state, the IPC + IFGC path lets you reuse most of that foundation; if you came up under the UPC, take the UPC path. What you must not do is study both — the codes differ in structure and in specific values, and splitting your memory between two code families is the fastest way to fail a closed-book exam. Second, notice what is not in the list: no state-specific Texas plumbing amendment book and no dictionary. The code choice is yours; the memorization burden is not optional.

Fees, Retakes & the LPG License Note

• TSBPE application fee: $175 to apply for the master plumber license with the board.
• Pearson VUE exam fee: $128.50 to register for and sit the exam.
• Initial license fee: $75 for the license once you pass.
• Retake windows: TSBPE retake rules impose 30 / 60 / 90-day waiting windows between attempts before you may sit again — confirm which window applies to your attempt history with the board.
• Passing score: 70% on the 308-item computer-based exam.
• Vendor: exams are delivered by Pearson VUE (Pearson Professional Assessments) at pearsonvue.com/us/en/tsbpe.html once TSBPE confirms your eligibility — Texas is no longer under PSI.

One Texas-specific credential note that matters in the field and on the job: installing LPG piping requires a separate license from the Texas Railroad Commission, apart from your TSBPE master plumber license. Master Plumbers are exempt from the Railroad Commission examination — but the RRC license itself is still required for LPG installation work. Factor that into your plans if fuel-gas work is part of your business.

How to Prepare

1. Confirm your board eligibility and apply. Get your TSBPE application (with the $175 fee) approved before you invest in prep and book anything. The approval is the gate.
2. Choose one code family — IPC/IFGC or UPC — and commit to it. The exam is not specific to one code, so study exactly one and never mix. If you came up under the IPC in another state, reuse that foundation with the 2018 IPC + 2018 IFGC; otherwise the 2018 UPC is your path.
3. Study for recall, not lookup. Texas is closed book: no dictionaries, books, papers or reference materials in the room. Drill the code requirements, table values, sizing data, formulas, accessibility dimensions and safety figures until they come out of your head — and rehearse answering without any reference in front of you, because there will not be one.
4. Cover the full seven-subject curriculum — especially the non-code columns. OSHA 29 CFR 1926, Texas Accessibility Standards, LPG piping per NFPA-54, Plumbing Mathematics and License Law and Board Rules are five full 25-question subjects (125 of 210 in the review-course blueprint) that most plumbers have never formally studied. Treat them as first-class exam content, not trivia.
5. Practice the sizing-chart and design problems. Drill the four sizing problems — fuel gas pipe sizing, water pipe sizing, gas appliance vent sizing and drainage pipe sizing — and rehearse laying out a three-story sanitary drainage and vent system for 16 fixtures until the tables and layout logic are automatic.
6. Study with a state-specific curriculum. MasterPlumberPractice organizes its Texas program (TX-MST) around this exact exam in seven chapters that mirror the review-course blueprint — the plumbing code, water heater installation, OSHA, TAS, LPG, plumbing math and license law — with closed-book recall practice and an AI tutor, so every question you drill reinforces content you must carry in memory, not where to look it up.
7. Simulate under exam conditions. Full-length, timed, 308-item runs in 360 minutes — with a planned break — at least once a week in the final month, aiming comfortably past the 70% line. The six-hour session is a stamina event as much as a knowledge test.

MasterPlumberPractice is built for exactly this exam: questions aligned to the Texas blueprint and the closed-book reality of it, a Texas curriculum (TX-MST) covering all seven subjects, and full-length timed simulations of the CBT format. Start with the IPC theory guides (the foundation for the IPC/IFGC path), try free practice questions to feel the format, and create a free account to track your scores as you go.

Frequently Asked Questions

Ready to Earn the Texas Master License?

The master license is the credential that lets you take full responsibility for plumbing systems in Texas — and the closed book means the studying you do is the knowledge you carry into the room. Start with the official blueprint: learn the code with our IPC theory guides, try free Texas Master practice questions, register free and see the all-inclusive pricing — one subscription covering the full Texas blueprint, so you never buy subject-area prep piece by piece.