- AL-MP is the Alabama Master Plumber Exam, overseen by the Alabama Plumbers and Gas Fitters Examining Board.
- The trade exam has 100 questions, runs 4.17 hours, is open book, and requires a 70% passing score.
- Starting January 1, 2026, a separate 40-question Business Law exam ($100) is required alongside the $160 trade exam.
- Master certificates must be obtained within 90 calendar days of passing both exams, then renewed each October-December for $175.
What Is AL-MP?
AL-MP stands for the Alabama Master Plumber Exam, the official trade examination administered to plumbers seeking Master-level licensure in the state of Alabama. It is not a generic national certification - it is a state-specific credential tied directly to Alabama's licensing structure, built on the 2021 IPC (International Plumbing Code) and 2021 IFGC (International Fuel Gas Code) as its trade references. Anyone researching "AL-MP" should understand this specificity first, because the acronym is shared by unrelated credentials in other fields; this site, almpexam.com, covers exclusively the Alabama Master Plumber Exam.
If you're just starting your research, our companion pieces on AL-MP Meaning and What Does AL-MP Stand For? go deeper into terminology, while this article focuses on what the exam actually tests and how the process works end to end.
Who Oversees the Exam
The Alabama Plumbers and Gas Fitters Examining Board governs Master Plumber licensure in the state. The trade examination itself is delivered through testing provider Prov, using a bulletin dated December 15, 2025 that lays out the current content outline. The January 2026 Board application for in-state Master applicants is the operative document candidates should reference when preparing paperwork.
Exam Format and Structure
The AL-MP trade examination consists of 100 questions delivered over 4.17 hours, and it is open book - meaning approved trade references, permanent tabs, highlighting, and a simple four-function calculator are all permitted at the test center or through an eligible Examroom remote appointment. Passing requires a score of 70%.
Alabama's rules allow pen-only margin notes without calculations, but movable tabs, Post-it notes, added photocopies, and practice-test books are explicitly prohibited. This matters because candidates sometimes assume "open book" means they can bring in any annotated material - Alabama's board is specific about what counts as an approved reference versus an unauthorized aid.
Beginning January 1, 2026, Master applicants must also pass a separate Business Law examination: 40 questions, 2 hours, also requiring a 70% passing score. Only a failed examination needs to be repeated - if you pass the trade exam but fail Business Law (or vice versa), you only retake the one you failed. For a deeper breakdown of exactly what "passing" means numerically across both exams, see AL-MP Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Open book does not mean open notes. Bring approved references with permanent tabs and highlighting only - leave movable tabs, sticky notes, and photocopies at home.
The 11 Trade Examination Domains
The trade exam's 100 questions are distributed across 11 domains. Sizing and Design and System Installation carry the largest allocations, meaning they deserve the most study time. Domain names and coverage areas are:
Domain 3: Sizing and Design
One of the two largest domains. Expect questions on pipe sizing calculations, fixture unit loads, venting requirements, and system design logic drawn from the 2021 IPC.
- Fixture unit and load calculations
- Pipe and vent sizing methodology
Domain 4: System Installation
The other largest domain. Covers installation practices for water supply, drainage, and gas systems consistent with IPC and IFGC standards.
- Installation sequencing and code compliance
- Material and joint requirements
The remaining nine domains round out the exam: General Knowledge, Drawings and Plan Reading, Trade Math, Tools, Water Heaters, Roof Drain Systems, Fixtures and Fittings, Drain Waste and Vents, and Safety. Each is scoped narrower than Sizing and Design or System Installation but still contributes scoreable questions. A full breakdown of every domain's likely topics and study emphasis is available in AL-MP Exam Domains 2026: Complete Guide to All 11 Content Areas.
Fees and Registration Mechanics
Understanding AL-MP costs means separating several distinct line items, because Alabama's fee schedule breaks licensure into discrete charges rather than one bundled price:
| Fee Item | Amount |
|---|---|
| Trade examination (Master Plumber) | $160 |
| Business Law examination (required from Jan 1, 2026) | $100 |
| Combined examination fees | $260 |
| Initial application processing fee | $50 |
| Initial Master certificate fee | $175 |
| Annual Master certificate renewal (Oct 1-Dec 31) | $175 |
Note that the $50 processing fee and $175 initial certificate fee are listed separately from examination fees on the Board's schedule - they are not included in the $260 combined exam total. For a line-by-line explanation of when each fee is paid and why the totals add up the way they do, read AL-MP Certification Cost 2026: Complete Pricing Breakdown.
Who Can Sit for the Exam
In-state applicants pursuing Master licensure need a current Alabama certificate along with at least one year of current, verifiable journeyman work experience. Beyond experience, applicants must secure Board approval and submit lawful-presence documentation as part of the application package. These are baseline requirements laid out in the January 2026 in-state Master application - candidates coming from out of state or with non-standard work histories should confirm their specific path directly with the Board.
Because eligibility rules determine whether you can even register for a test date, it's worth reviewing them before spending money on study materials. Our full breakdown lives at AL-MP Requirements 2026: Eligibility, Prerequisites & How to Qualify.
After You Pass: Certificate and Renewal
Passing both required examinations starts a clock: candidates must obtain the Master certificate within 90 calendar days after passing. Missing that window can complicate the process, so plan the paperwork step as carefully as you plan exam prep.
Once issued, Master certificates renew annually during the October 1 to December 31 window for $175. Renewal also requires four approved continuing education (CE) hours each year, subject to Board exemptions. Plumber-only certificate holders need all four hours in plumbing; dual plumbing/gas holders split the four hours between both trades. For example, anyone renewing for 2027 certification must complete and submit CE before November 1, 2026, then renew during the October-December 2026 window.
Key Takeaway
Certification is not a one-time event. Track your CE hours annually and renew inside the October-December window every year to keep your Master certificate active.
For scheduling logistics around testing windows and application deadlines, see AL-MP Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Who Hires AL-MP Holders
Holding the Master Plumber credential in Alabama typically opens doors to roles with greater scope of responsibility than journeyman-level work - supervising installations, pulling permits under your own name, and running crews on larger commercial or residential projects. Because the credential is state-issued and tied to Alabama's specific code references (2021 IPC and 2021 IFGC), it carries particular weight with employers and municipalities operating inside Alabama's licensing jurisdiction.
If you're weighing whether the investment in exam fees, study time, and annual renewal makes sense for your career trajectory, two resources can help you think it through: AL-MP Salary Guide 2026: Complete Earnings Analysis and Is the AL-MP Certification Worth It? Complete ROI Analysis 2026. Job-seekers specifically can also check AL-MP Jobs for a sense of what roles typically require or prefer Master-level licensure.
Building an AL-MP Study Plan
Because Sizing and Design and System Installation carry the heaviest question weight, a well-structured study plan front-loads those two domains rather than treating all 11 equally. A simple sequencing approach works well:
Sizing and Design + System Installation
- Work through IPC sizing tables and fixture unit calculations
- Review installation sequencing against IFGC requirements
Drain Waste and Vents, Water Heaters, Fixtures and Fittings
- Practice vent sizing scenarios
- Review water heater installation and venting rules
Trade Math, Drawings and Plan Reading, Tools
- Drill calculation-heavy question types
- Practice reading plan symbols and schedules
General Knowledge, Roof Drain Systems, Safety, Business Law
- Cover remaining lighter-weighted domains
- Prepare separately for the 40-question Business Law exam
Since the trade exam is open book, part of your preparation should involve practicing with your actual approved references and permanent tabs - not just memorizing content, but learning to locate answers quickly under time pressure across 4.17 hours and 100 questions. A full first-attempt strategy, including how to approach the open-book format, is covered in AL-MP Study Guide 2026: How to Pass on Your First Attempt. If you want a quick-reference companion for final review, AL-MP Cheat Sheet 2026: One-Page Review of Must-Know Facts condenses the highest-value facts into one page.
To gauge how demanding the exam actually feels once you're inside it, How Hard Is the AL-MP Exam? Complete Difficulty Guide 2026 walks through the practical difficulty factors, and AL-MP Pass Rate 2026: What the Data Shows looks at what's publicly known about outcomes. Practicing with realistic questions ahead of test day - for example through the practice tests on this site - helps you get comfortable with the pacing before you sit for the real thing at a test center or via Examroom.
FAQ
On this site, AL-MP refers exclusively to the Alabama Master Plumber Exam administered under the Alabama Plumbers and Gas Fitters Examining Board. It is tied to Alabama's specific code references and licensing rules and should not be confused with any other credential using similar initials.
Yes, starting January 1, 2026, Master applicants must pass both the trade examination and the separate Business Law examination. The trade exam costs $160 and Business Law costs $100, for combined examination fees of $260.
Only the failed examination must be repeated. If you pass the trade exam but fail Business Law, or vice versa, you retake just that portion rather than both.
You must obtain the Master certificate within 90 calendar days after passing both required examinations.
Approved references, permanent tabs, highlighting, and a simple four-function calculator are permitted. Pen-only margin notes without calculations are allowed, but movable tabs, Post-it notes, added photocopies, and practice-test books are prohibited.