Overview
Georgia licenses plumbers at the state level, not the city or county level. The credential comes from the State Construction Industry Licensing Board, specifically its Division of Master and Journeyman Plumbers, administered through the Georgia Secretary of State licensing office. One statewide license covers you everywhere in Georgia, which is the part out-of-state contractors usually get wrong. There are two tiers. A journeyman plumber works on plumbing systems but cannot pull permits in their own name or run a plumbing company. A master plumber can. That distinction is the whole game: the master license is what lets you take out permits, sign off on work, and serve as the qualifying agent for a business. Within the master tier, Georgia splits the credential into Class I (Restricted) and Class II (Unrestricted), and the difference between those two decides how big a job you can legally touch. If you plan to own a plumbing company or bid commercial work, you need a master license held by you or by someone who works for you. I have watched people staff up and chase contracts before anyone on the payroll could legally pull the permit, and that is an expensive mistake.
Master Plumber Class I vs Class II
This is the decision that sets your ceiling, so understand it before you sit for an exam. A Master Plumber Class I (Restricted) license limits you to plumbing in single-family dwellings and one-level structures designed for no more than two families, plus commercial structures under a defined size threshold (historically around 10,000 square feet). It is a real license that lets you run a residential plumbing business, but it boxes you out of larger commercial and industrial work. A Master Plumber Class II (Unrestricted) license carries no scope restriction. Class II covers all plumbing, including large commercial and industrial systems, with no square-footage cap and no limit on connection sizes. Below both master tiers sits the journeyman, who performs plumbing under the responsibility of a master but holds no permit-pulling authority. The practical takeaway: if your business will ever touch big commercial jobs, hospitals, schools, industrial sites, you want Class II, because upgrading later means more documented experience and another exam. Class I is the right call only if you are committed to staying in residential and small commercial. The board publishes the exact size thresholds, and those numbers move, so check the rules in force before you assume a job qualifies under Class I.
Experience, Exam, and Insurance
Georgia gates this credential on documented experience, and the experience requirement is the hardest part to fake. For a journeyman license, you document at least one year of plumbing work covered by the Georgia State Plumbing Code. For a master license, the bar jumps: you need a minimum of five years of plumbing experience, with at least two of those years spent licensed as a Georgia journeyman. That structure forces the journeyman-first path, you cannot skip straight to master without journeyman time on the record. Class II additionally requires documented commercial or industrial plumbing experience, because the board will not hand you unrestricted authority on residential hours alone. The exam is delivered through PSI and covers both a plumbing trade portion and a business and law portion; you need a passing score (historically 70) on the relevant exams. You also supply references: Class I requires three references with at least one from a licensed master plumber, and Class II requires at least two master-plumber references. Proof of insurance is part of the package as well. Because the board updates fees, score thresholds, and forms, read the current requirements on the board site before you build your application.
The Application Process
The application is a documentation exercise more than a test of skill. You start by proving your experience, and this is where most applications stall. The board wants references and signed affidavits attesting to your plumbing hours, and for a master license that means people who can credibly vouch for five years of work, including the journeyman-licensed portion. Get those references lined up early, because chasing down a former employer's signature months after you left is its own ordeal. Next you submit the license application to the board and register for the PSI exam covering the trade and the business-and-law content for the class you are pursuing. You sit the exam, pass it, and submit proof of insurance along with your fees. If you are licensing a company rather than just yourself, one master plumber serves as the qualifying agent, the licensed individual whose credential authorizes the business to pull permits and operate. That qualifying agent has to actually be tied to the company, not a name rented for paperwork. The board reviews the full package before issuing. Build in time: experience verification and exam scheduling rarely move as fast as you want. Check the current forms and submission steps on the board site, since the packet contents change.
Reciprocity
Reciprocity is where out-of-state plumbers get the most wishful, so be realistic. Georgia does not offer broad automatic reciprocity for plumbing and conditioned-air licenses the way some neighboring states do with each other. What Georgia does offer is case-by-case evaluation: the board may waive a portion of the requirements for an applicant who holds an equivalent license from another state, but only after deciding that the other state's standards are comparable to Georgia's. Approval is not guaranteed, and it is not a rubber stamp. A few Southeastern states have entered reciprocal arrangements for plumbing and conditioned-air credentials over the years, and the specific list shifts as agreements are signed and dropped. That is exactly why you should not rely on a forum post or a competitor's anecdote. If you hold a license in another state and want to work in Georgia, pull the board's current reciprocity policy and the active list of recognized states before you assume your credential transfers. Treat any reciprocity as a possible shortcut, not a sure thing, and have a backup plan to sit the Georgia exam if the board says no.
Costs and Timeline
The direct cash cost of a Georgia plumbing license is modest compared to the time cost. Expect application and license fees in the low hundreds of dollars in total, plus a separate PSI exam fee per attempt, also typically in the low hundreds. Add insurance, which is an ongoing expense rather than a one-time fee, and any exam-prep course you choose to take. Renewal fees recur on the board's cycle. None of those numbers is the real obstacle. The long pole is experience: one year minimum for a journeyman, five years for a master with two years carrying a journeyman license. You cannot buy your way past that timeline, and the documentation has to hold up to board scrutiny. Realistically, plan on the better part of a working career to reach Class II, because the commercial and industrial experience requirement stacks on top of the base five years. Exam scheduling and board review add weeks once your paperwork is in. The dollar figures here are durable ranges, not live quotes; the board adjusts fees, so look up the current fee schedule before you budget.
FAQ
Do I need a state license to do plumbing in Georgia, or just a local one? Georgia licenses plumbers at the state level through the State Construction Industry Licensing Board. One statewide license covers the whole state; you do not collect a separate license in each city or county.
Can a journeyman plumber run a plumbing business in Georgia? No. A journeyman performs plumbing work but cannot pull permits in their own name or own a plumbing company. You need a master plumber, Class I or Class II, to serve as the qualifying agent for a business.
What is the difference between Master Plumber Class I and Class II? Class I (Restricted) limits you to residential and small commercial work under a size threshold. Class II (Unrestricted) covers all plumbing, including large commercial and industrial, with no scope cap.
Does Georgia accept my plumbing license from another state? Maybe, but not automatically. The board reviews out-of-state applicants case by case and may waive requirements if your home-state license is comparable. Check the board's current reciprocity policy before assuming your license transfers.