Georgia Master Plumber Class I Restricted: single-family dwellings, qualifying residential structures for no more than two families, and commercial structures not exceeding 10,000 square feet.
Georgia Master Plumber Class I Restricted Exam Overview
Georgia's Master Plumber Class I license is the restricted Master Plumber credential. It allows qualifying plumbing contracting work within the Class I residential and commercial limits.
The exam is designed to test more than basic plumbing installation. Master-level preparation includes plumbing code, fuel gas, calculations, plan reading, system design, safety, accessibility, excavation responsibilities and contractor administration.
Current Class I exam structure: 120 scored questions plus 24 pretest questions, for 144 questions presented.
Testing time: seven hours total, divided into two 3Ā½-hour sessions.
Exam format: closed book.
Georgia Master Plumber Class I Exam Snapshot
Build your contractor exam prep around the current testing structure.
| Exam Feature | Current Information |
|---|---|
| Scored Questions | 120 |
| Pretest Questions | 24 unscored questions |
| Total Presented | 144 questions |
| Testing Time | 7 hours total | Two 3Ā½-hour sessions |
| Passing Standard | Final scaled score of 70 |
| Testing Provider | PSI |
| Exam Format | Closed book |
License
Georgia Master Plumber Class I Restricted
Commercial Scope
Commercial structures not exceeding 10,000 square feet
Residential Scope
Single-family and qualifying residential structures
designed for no more than two families
Experience
At least 5 years qualifying plumbing experience
Journeyman Experience
At least 2 years licensed as a Journeyman Plumber
References
3 licensed-plumber references, including at least
1 licensed Master Plumber reference
Exam
120 scored + 24 pretest | 144 presented
Testing Time
7 hours total
Current Plumbing Code
2024 Georgia Plumbing Code / 2024 IPC with Georgia amendments
Current Gas Code
2024 Georgia Gas Code / 2024 IFGC with Georgia amendments
Core Georgia Master Plumber Class I Exam Prep Topics
Plumbing Code: water distribution, fixtures, sanitary drainage, vent systems, traps, interceptors, indirect waste, storm drainage and related code requirements.
Fuel Gas: gas piping, appliance installation, combustion air, venting and fuel-gas safety.
Mathematics: pipe sizing, offsets, volume, area, circumference, pressure, drop and applied field calculations.
Plans and Isometrics: blueprint reading, system layout, risers and plumbing isometric interpretation.
Georgia Master Plumber Class I Study Priorities
These bars represent practical prep priority based on the major subjects found throughout the current course and supporting research. They are not presented as an official PSI question-weight table.
2024 Georgia Plumbing Code / IPC
Highest Priority
Drainage, Waste and Vent Systems
Highest Priority
Water Supply and Distribution
High Priority
2024 Georgia Gas Code / IFGC
High Priority
Plumbing Mathematics
High Priority
Plans and Isometrics
Strong Priority
Business, OSHA, ADA and Georgia 811
Supporting Priority
Georgia Master Plumber Class I Study References
Because the Master Plumber exam is closed book, these books are preparation references rather than exam-room references.
| Study Reference | Primary Prep Use |
|---|---|
| 2024 Georgia Plumbing Code | Plumbing systems, fixtures, drainage, venting, water supply and general code requirements |
| 2024 Georgia Gas Code | Gas piping, venting, appliances, combustion air and fuel-gas safety |
| Mathematics for Plumbers and Pipefitters | Applied trade mathematics, offsets, areas, volumes, measurements and pipe calculations |
| Plumbing Technology: Design and Installation | Plumbing systems, design concepts, installation and trade knowledge |
| Georgia Contractors Guide | Business law, project management, contractor administration and compliance |
| OSHA 29 CFR Part 1926 | Construction safety and employer responsibilities |
| ADA Standards for Accessible Design | Accessibility and plumbing fixture requirements |
| Georgia 811 Excavator Manual | Excavation, underground utility notification and safe digging requirements |
How to Prepare for a Closed-Book Master Plumber Exam
Do This
- Use tabs and highlighting during study
- Learn plumbing-code structure and definitions
- Practice system rules repeatedly
- Memorize high-frequency sizing concepts
- Complete plumbing math without looking up every step
- Practice isometric problems from memory
- Finish final practice exams without books
Avoid This
- Preparing as if books will be available on exam day
- Only memorizing practice-test answers
- Skipping fuel-gas preparation
- Ignoring plumbing mathematics
- Avoiding plan and isometric problems
- Studying only technical code and ignoring contractor topics
- Using older Georgia code editions as your main 2026 prep
Georgia Master Plumber Class I Licensing Roadmap
Move from qualifying plumbing experience through Board approval, contractor exam prep and PSI testing.
1
Build qualifying plumbing experience
Georgia generally requires at least five years of qualifying plumbing experience.
2
Complete Journeyman experience
At least two of the qualifying years must be experience while licensed as a Journeyman Plumber.
3
Collect licensed-plumber references
Prepare three licensed-plumber references, including at least one Master Plumber reference.
4
Submit the Georgia application
Complete the required application and supporting documentation for Board review.
5
Receive examination approval
Wait for Board approval before scheduling the Master Plumber Class I exam.
6
Complete contractor exam prep
Study 2024 plumbing and gas codes, calculations, isometrics, contractor law, safety and accessibility.
7
Take the PSI exam
Complete the two-part closed-book examination and meet the final scaled passing score.
Six-Week Georgia Master Plumber Class I Exam Prep Plan
Week 1
Plumbing Code Foundation
- Code definitions
- General regulations
- Fixtures
- Water heaters
Week 2
Water Supply
- Water distribution
- Pipe sizing
- Pressure
- Backflow concepts
Week 3
Drainage and Venting
- Sanitary drainage
- Vent systems
- Traps
- Interceptors
Week 4
Fuel Gas
- Gas piping
- Combustion air
- Venting
- Appliance requirements
Week 5
Math and Isometrics
- Offsets
- Volume and area
- Pressure calculations
- Blueprints and risers
Week 6
Closed-Book Simulation
- Timed mixed-topic exams
- No-reference practice
- Weak-area review
- Seven-hour endurance prep
Georgia Master Plumber Class I Exam Prep Options
Class I Exam Prep Course
Structured Master Plumber Prep
- Georgia Class I exam preparation
- Plumbing-code review
- Fuel-gas review
- Plumbing mathematics
- Contractor exam strategy
Ultimate Exam Prep
Reference-Focused Study
- Organized study references
- Tabbed and highlighted study support
- Calculation review
- Code-topic reinforcement
- Closed-book testing preparation
Contractor Study Focus
Technical + Business Prep
- 2024 IPC study
- 2024 IFGC study
- OSHA and accessibility
- Georgia 811 responsibilities
- Business and project management
Class I Restricted Is a Master Plumber Contractor License
Georgia distinguishes between Journeyman Plumbers and licensed Master Plumbers.
Ā· Master Plumber Class I is restricted.
Ā· Class II is the unrestricted Master Plumber classification.
Ā· A Class I applicant generally needs five years of qualifying experience.
Ā· At least two qualifying years must be as a licensed Journeyman Plumber.
Ā· Georgia plumbing businesses operate under a licensed Master Plumber.
Georgia Master Plumber Class I Restricted Exam Prep FAQ
Georgia Master Plumber Exam Basics
The current Class I exam information lists 120 scored questions
plus 24 pretest questions, for 144 questions presented.
Candidates receive seven hours total,
divided into two 3Ā½-hour testing sessions.
The minimum final scaled passing score is 70.
No. The Master Plumber Class I exam is closed book,
so final exam prep should include no-reference practice.
Class I is restricted to qualifying single-family work,
certain residential structures designed for no more than
two families, and commercial structures not exceeding
10,000 square feet.
Licensing Requirements
Georgia generally requires at least five years
of qualifying plumbing experience for a Master Plumber applicant.
Yes. At least two of the qualifying five years must generally
be while licensed as a Journeyman Plumber.
Georgia requires three licensed-plumber references for a
Master Plumber application, with at least one licensed
Master Plumber reference for Class I.
Georgia states that a plumbing business must operate
under a licensed Master Plumber.
Codes and Exam Prep
Current 2026 prep information identifies the
2024 Georgia Plumbing Code based on the 2024 IPC
with Georgia amendments.
Current 2026 prep information identifies the
2024 Georgia Gas Code based on the 2024 IFGC
with Georgia amendments.
Yes. Practice pipe sizing, offsets, area,
volume, circumference, pressure, drop
and applied trade calculations.
Yes. Plumbing plans, risers and isometric drawings
are important Master Plumber study areas.
Yes. Tabs and highlighting can improve study speed
and reference familiarity before exam day, even though
the books themselves are not used during the closed-book exam.
Yes. OSHA construction-safety information is included
among the broader contractor study topics.
Yes. ADA accessibility requirements are part of the
contractor and plumbing-study reference set.
Georgia rules require an applicant who fails the applicable
exam twice to complete a Board-approved review course
before being scheduled for a third attempt.
Start with code structure, water distribution,
sanitary drainage, venting, plumbing fixtures
and fuel gas. Then add plumbing mathematics,
isometrics, OSHA, accessibility and contractor-law topics.
Georgia Master Plumber Class I Exam Prep Video
Georgia Master Plumber Class I Exam Prep Resources
Prepare for the Georgia Master Plumber Class I Restricted Exam
Build plumbing-code knowledge, fuel-gas understanding, calculation accuracy, isometric-reading skill, contractor-law knowledge and closed-book testing endurance for the Georgia Master Plumber Class I Restricted exam.
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