GAMP Requirements 2026: Eligibility, Prerequisites & How to Qualify

GAMP Eligibility Overview

The Georgia Master Plumber License Exam (Class II Unrestricted), often just called GAMP, isn't an exam you can walk into cold. Georgia's licensing law treats the Master credential as the top of the plumbing trade ladder, and eligibility is built around years of documented, full-time field experience rather than classroom hours alone. The exam itself is developed and administered by PSI on behalf of the Georgia State Division of Master and Journeyman Plumbers, which operates within the Georgia Construction Industry Licensing Board.

Before you spend a dollar on registration or a minute on study materials, you need to confirm you actually meet the experience thresholds and can produce the paperwork the Board requires. This article walks through exactly what qualifies, what documentation you'll need to assemble, and how the exam itself is structured so you know what you're preparing for once you're cleared to sit. If you're still building context on the credential in general, start with What Is GAMP? and GAMP Certification before diving into the eligibility specifics below.

Experience Requirements Under the 2026 Law

The headline number is five years of full-time plumbing experience. That's the baseline every applicant must meet. But the law adds important nuance depending on when you became a Journeyman:

• Journeymen licensed before March 1, 2025: Only two of your five years need to be served specifically as a licensed Georgia Journeyman Plumber.
• Journeymen licensed on or after March 1, 2025: Four of your five years must be served as a Journeyman.
• Everyone, regardless of when they became a Journeyman: At least two years of your total experience must be in unrestricted Class II work specifically.

This structure rewards candidates who got their Journeyman license early, giving them more flexibility in how the remaining years of experience were earned. If you licensed later, the law expects more of your total time to have been spent working under Journeyman status before you attempt the Master exam.

Application Documents & Background Check

Meeting the experience requirement is only half the eligibility puzzle. The application itself requires a specific paperwork package, and incomplete submissions are one of the most common reasons candidates get delayed before they ever see an exam appointment.

• Supervisor affidavits: Written verification from supervisors confirming your hours and the nature of your plumbing work, including how much of it qualifies as unrestricted Class II experience.
• Identity and lawful-presence documents: Standard proof-of-identity paperwork required by the Board for licensure eligibility.
• Background check: A criminal background check is part of the application review process.

Because affidavits depend on former employers and supervisors, start collecting these as soon as you know you're approaching the five-year threshold. Waiting until the last minute to track down a supervisor from three jobs ago is a common, avoidable delay.

Exam Format: Structure, Timing & Scoring

Once your application and documentation are approved, you'll schedule a computer-based exam through PSI. Here's exactly what you're walking into:

• 140 scored multiple-choice questions, plus 28 unscored pretest questions mixed in (you won't know which is which, so treat every question as if it counts).
• Two parts, 3.5 hours each - a full-day testing commitment split into two distinct sessions.
• Closed-book format - you won't have code books open during the exam.
• Silent, nonprogrammable calculator allowed - useful given the calculation-heavy domain covering offsets, volume, area, and pressure.
• Passing score: a final scaled score of 70.

The scaled scoring means your raw number of correct answers doesn't map one-to-one to a percentage - different exam forms are statistically equated. For a deeper breakdown of what that scaled score actually means for your prep targets, see GAMP Passing Score 2026: Exactly What You Need to Pass.

The 12 GAMP Exam Domains

The 140 scored questions are distributed across twelve content domains, each weighted differently. Understanding these weights should directly shape how you allocate study time - a domain worth 15% deserves far more attention than one worth 3.57%.

Notice that four domains - Regulations, Maintenance and Repair, Safety-related Issues, Business Laws, and Administrative Requirements - each sit at 10.71%. Combined with Installation Activities at 15%, these domains represent the bulk of your scored questions. For a full breakdown of what each domain actually tests, see GAMP Exam Domains 2026: Complete Guide to All 12 Content Areas.

Code References for 2026 Exams

Code editions matter enormously for exam accuracy, and this is an area where candidates get tripped up if they study from outdated material. For exams administered beginning May 1, 2026, content is based exclusively on the 2024 Georgia Plumbing Code and the 2024 Georgia Gas Code with Georgia amendments. If your study materials, code books, or practice questions reference an earlier edition, you're studying the wrong source for exams in this window.

What Happens If You Fail Twice

Georgia builds a safety net - and a checkpoint - into the retake process. After two failed attempts at the exam, candidates are required to complete a Board-approved review course before they're permitted to sit again. This isn't optional remediation; it's a mandatory gate. If you're worried about how difficult the exam is likely to be given this rule, How Hard Is the GAMP Exam? Complete Difficulty Guide 2026 and GAMP Pass Rate 2026: What the Data Shows both go deeper into what makes candidates struggle and how to avoid a second attempt in the first place.

The practical takeaway: treat your first attempt as the one that counts. Full-length timed practice on our practice test platform before you ever schedule with PSI is far cheaper, in time and money, than working through a failed attempt and a mandatory review course.

Licensing Timeline & Renewal

Passing the exam isn't the finish line - it's the start of an ongoing licensing obligation. Georgia Master Plumber licenses renew by November 30 of even-numbered years, and each renewal cycle requires 8 continuing-education hours. Mark this on your calendar the moment you're licensed; missing a renewal window creates its own set of administrative headaches separate from the initial exam process. For a full look at exam scheduling windows leading up to your test date, see GAMP Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Mapping a Study Plan to Your Eligibility Window

Once your experience and documentation are confirmed, the real work is converting domain weights into a study schedule. A generic weekly template won't help much here - your schedule should mirror the exam's actual point distribution.

For a more detailed strategy on sequencing your review and avoiding common pitfalls, read GAMP Study Guide 2026: How to Pass on Your First Attempt. And if you want a compact reference for last-minute review, bookmark GAMP Cheat Sheet 2026: One-Page Review of Must-Know Facts.

Who Hires Class II Unrestricted Master Plumbers

Because Class II carries unrestricted scope, holding this license opens the door to a wider range of work than restricted classifications allow - commercial contracting, larger residential projects, and supervisory roles that require sign-off authority. If you're weighing whether the investment of time and documentation is worth it relative to your current Journeyman status, Is the GAMP Certification Worth It? Complete ROI Analysis 2026 lays out the tradeoffs, and GAMP Salary Guide 2026: Complete Earnings Analysis covers how earning potential shifts once you're licensed at the Master level.

For candidates exploring what roles actually look for a Master Plumber credential, GAMP Jobs outlines common employer expectations, and GAMP Training covers preparation programs beyond self-study. You can also start building familiarity with the exam question style directly on our GAMP practice platform well before your application is even finalized.

Frequently Asked Questions