Guides
The questions plumbers type, answered from the same dated dataset as the checkers — hours, categories, reciprocity, renewal lines and the owner gate, in plain language.
The famous answer is 8,000 hours. It is wrong in Minnesota, Maryland, Colorado and more — and the split inside the hours matters as much as the total. The state-by-state table.
Journeyman plumber requirements are three different systems wearing one name: state ladders, contractor-license states, and no-state-license states. Which system your state runs decides everything.
Texas journeyman plumber: 8,000 hours as a registered apprentice, the 48-hour course, the $40 exam — and the registration rule that decides whether your hours count at all.
Minnesota journeyman: 7,000 hours is only half the rule. The category minimums — 2,000 water, 2,000 DWV, 1,000 fixtures — are where applications fail.
Washington PL01 journey level: 8,000 trainee hours under a certified journey plumber, at least 4,000 of them commercial or industrial. The commercial split is the trap.
Maryland journeyman: apprentice license for 4 years, 7,500 hours under a master, 32 hours of backflow training — and the WSSC/Baltimore County question of who licenses you at all.
There is no California journeyman plumber license to apply for. The C-36 contractor license and its qualifying individual are the real system — here is how workers fit into it.
In registration states, apprentice registration is not paperwork for its own sake — it is the switch that makes your hours count toward the journeyman license.
A Texas trades educator hears it from apprentices every year: the boss said no card was needed. Then the board counts the hours — and years of work vanish. How the trap works and how to climb out.
The reciprocity map plumbers ask for: the five agreements that exist, the review states, the contractor states, and the two states — Indiana and Georgia — that endorse nobody.
“Transfer” is the wrong word for most pairs: endorsement is rare, review is a maybe, and the exam route is the real default. How to find your pair's actual door.
Most states endorse a short list. Indiana and Georgia endorse no state's journeyman license at all — every out-of-state plumber takes the exam route. What that means in practice.
Texas endorses journeymen from exactly two states — Louisiana and Arkansas — and each direction has fine print. Everyone else: the exam route, on 8,000 hours of documented experience.
Renewal cycles, CE hours, late windows and reinstatement deadlines by state — and the second deadline, the one nobody prints on the renewal notice, that decides whether a lapse is a fee or a restart.
An expired license has two possible futures — reinstatement inside the window, restart past it. The window, the fees, the CE catch-up, and the states with the hardest lines.
Texas Occupations Code enforcement, in plain language: expired 2 years or less, reinstate. Expired over 2 years, the license is gone — re-register as an apprentice, re-pass every exam.
Texas journeyman renewal in full: the annual cycle, the $40 renewal, 6 hours of continuing education, late renewal inside 2 years — and the cliff after it.
Illinois renews a “Licensed Plumber,” not a journeyman — the state has no journeyman/master titles. How the IDPH renewal works, and where Chicago's separate system fits.
Open-book or closed, 4 hours or 2, computer or paper — journeyman exams differ by state and vendor. The formats, the code books, and the rules that fail people who know the trade.
A failed exam is a fee and a wait — unless your state runs an attempt clock. Retake windows, per-attempt costs and the states where attempts expire.
Master plumber requirements by state: years as a journeyman, additional hours in some states, the master exam — and why there is no shortcut around time in grade.
The route from journeyman to master: serve the time, keep the license unbroken, document the years, pass the master exam — and the states where the master title works differently.
Minnesota splits its 7,000 hours into water distribution, DWV and fixtures minimums. What counts in each category, who else splits, and how to fix a thin category in time.
Washington's journey-level license needs 8,000 hours with 4,000 commercial or industrial. What counts as commercial, why residential-only trainees stall, and how to rebalance in time.
Seven states issue no state journeyman plumber license. Licensing is real in all of them — it just lives at city hall. The map of who actually licenses plumbers in the no-state-license states.
NYC is America's hardest plumbing license market: journeyman registration needs 5 years including 1 in NYC; permits issue only to Licensed Master Plumbers. The system, plainly.
Trucks, logos and leads come after the license gate: a master of record, the contractor license, bond and insurance. The order of operations that keeps a new plumbing company legal.
The Texas Responsible Master Plumber: a master in good standing, $300,000 insurance, one company at a time, $225 to file and $300 to renew. What the seat is and what it is not.
Non-plumbers own plumbing companies in every licensed state — but only through a master of record. How the qualifier/RME/responsible-master seat works, and what it costs you in control.
Benjamin Franklin Plumbing's own disclosure: $43,000 fee, $143,273–$286,702 total initial investment, 6% royalty, $75,000 liquid capital. What the FDD says, without the sales call.
Mr. Rooter's disclosure: $40,000 fee, $79,975–$187,140 total initial investment, 5–7% royalty, 238 units. The filed numbers, and the license gate they don't remove.
The exam fee is the smallest part of what eligibility costs: license fees, processing services at $149.99, courses at $296.99. The fee table and the full stack, by state.
Texas 6 hours a year, Minnesota 16 per 2 years — CE is the part of renewal entirely in your control, and the most common reason renewals stall. The table and the habit.
Boards license documentation, not memories. The hour log that survives an audit, employer affidavits, and Indiana's own fallback — your affidavit plus W-2s when an employer won't sign.
