Nevada Master Plumber Certification is issued by the Nevada Board of Plumbing Examiners and administered by NITC. The documented requirement for the certification comes from Clark County and the City of Reno. The certification examination runs 150 questions in two parts — 50 open-book questions in two hours and 100 closed-book questions in two hours — tested on the 2024 Uniform Plumbing Code, with a published standard of a minimum 75%. The PassProfessor Nevada Master Plumber Certification program prepares candidates for that sitting and for the local-certification structure that surrounds it.
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What this credential is — and what it is not
The Nevada Master Plumber Certification is a certification, administered through a system that sits apart from Nevada contractor licensing, and keeping the two systems apart is the first thing a candidate has to learn. The Nevada Board of Plumbing Examiners — NBOPE — issues Journeyman Plumber and Master Plumber Certifications, and the examinations for those certifications are administered by NITC, the National Inspection Testing and Certification Corporation. Applications, fees, and eligibility for the certification run through NBOPE care of NITC.
The Nevada State Contractors Board — the NSCB — is a different authority running a different system. The NSCB issues no master license. Holding an NBOPE journeyman or master certificate does not grant an NSCB contractor license, and holding an NSCB contractor license does not grant an NBOPE certificate. The two systems have different authorities, different administrators, different tested editions, and different fees, and material that merges them will mislead a candidate on every one of those points.
What Nevada statute does provide, at NRS 624.240, is a bridge between the state contractor examination and local licensing: a person who passes the Board’s technical examination and meets the experience and knowledge requirements is qualified for a master’s license if issued by a political subdivision. Stated exactly in those terms, that is the whole bridge. Master’s licenses in that layer are locally issued credentials; they are not Board-issued licenses, and they are not the NBOPE certification this program prepares candidates for.
The documented mandate for the NBOPE certification is local. NBOPE’s own documents state that applicants must be qualified as mandated by Clark County and the City of Reno, and Reno requires a person performing plumbing installations, alterations, and additions within the City of Reno to hold a valid journeyman certificate, with homeowner, supervised-employee, and twelve-month reciprocity exceptions stated in Reno’s own material. This page therefore states the requirement only as documented, and makes no claim that the certification is a statewide Nevada licence or a statewide requirement.
The examination at a glance
| Item | Verified position |
|---|---|
| Program | Nevada Master Plumber Certification — the master tier of the NBOPE certification system |
| Certifying body | Nevada Board of Plumbing Examiners (NBOPE) |
| Examination administrator | NITC (National Inspection Testing and Certification Corporation) — computer delivery is via Prometric test centres |
| Documented mandate | Required by Clark County and the City of Reno, as documented in NBOPE and City of Reno material |
| Examination structure | 150 questions in one appointment: Part 1 — 50 questions, open book, 2 hours; short break; Part 2 — 100 questions, closed book, 2 hours |
| Tested edition | 2024 Uniform Plumbing Code (UPC) |
| Passing standard | Minimum 75% — published in exactly that form |
| Examination fee | $250 for the certification examination (computer or paper); $340 for a computer examination at a Prometric Test Center |
| Examination locations | Las Vegas or Reno, as stated in the current form |
| Drawing weight | Sanitary Drainage, Vents, and Storm Drainage Related Drawings alone are 34.67% of the Master examination; sizing illustrations appear in the closed-book part |
| Administrator note | PassProfessor is independent and is not affiliated with the Nevada Board of Plumbing Examiners or with NITC |
Two sittings inside one appointment
The Master and Journeyman certification examinations share one structure. Part 1 presents 50 multiple-choice questions in two hours, open book, drawn as general questions from all chapters together with illustrations, tables, charts, and drawings. After a short break, Part 2 presents 100 multiple-choice questions in two hours, closed book, again from all chapters, together with illustrations on drain, waste, and vent sizing, gas pipe sizing, storm drainage, and water pipe sizing. Total testing time is four hours plus the break.
Delivery runs three ways: a computer examination through NITC testing locations or a computer lab, a computer examination at a Prometric Test Center, or a paper examination in a group setting. The candidate brings the Uniform Plumbing Code edition, the admission letter, and valid photo identification; a silent, battery-operated, non-printing, non-programmable calculator is suggested and allowed, and beyond the permitted code book for the open-book part, no handbooks, notebooks, notes, drawings, or papers are permitted. Computer-based results are given immediately; paper scores are mailed within 30 working days, never by telephone.
A warning belongs in this section rather than in a footnote: the examination must never be described as an open-book examination. Half of its design — the larger half, by question count — is closed book, and a candidate who prepares as though the code book will always be open is preparing for a sitting that does not exist.
The drawings disclosure, stated plainly
This examination is heavily drawings-based, and a written preparation program cannot change that fact — so this page states it plainly. The single largest content area of the Master examination, Sanitary Drainage, Vents, and Storm Drainage Related Drawings, carries 34.67% of the examination. The Water Supply and Fuel Gas areas also carry related-drawings shares. Inside the closed-book part, candidates meet sizing illustrations covering drain, waste, and vent sizing, gas pipe sizing, storm drainage, and water pipe sizing, and they meet them without the code book in hand.
Written practice can build the code knowledge, the sizing method, and the reading discipline those items demand. It does not replicate the drawings themselves, so interpreting illustrations and working sizing problems from drawings must be a deliberate, repeated part of study — not an afterthought. A candidate who treats this sitting as a text-only test has misunderstood more than a third of it.
What the Master examination covers
The published Master content areas, with their printed weights, are:
Installation Standards, Administration, Definitions and General Regulations — 14%. The framing layer of the 2024 Uniform Plumbing Code: how the code is administered, what its defined terms mean, and the general regulations that govern installation work.
Fixtures and Fixture Fittings, Water Heaters, Indirect Wastes, and Traps and Interceptors — 24.67%. The fixture-side body of the code, through indirect waste arrangements and the trap and interceptor rules.
Sanitary Drainage, Vents, and Storm Drainage Related Drawings — 34.67%. The largest area and the centre of gravity: drainage, venting, and storm drainage, tested substantially through related drawings.
Water Supply and Related Drawings — 18.67%. Water supply systems — sizing, distribution, and protection — again tested in part through drawings.
Fuel Gas and Related Drawings — 8%. Fuel gas piping and its related drawings: the smallest printed area, in a sitting whose closed-book half rewards preparation across the whole code.
The weights carry a study instruction: drainage, venting, storm drainage, and water supply — the sizing-and-drawings core — dominate the Master paper. Preparation time should follow the printed weights, not personal familiarity.
Tested edition and adopted code: two different layers
Candidates are tested on the 2024 Uniform Plumbing Code. The current application form states that the certification examinations for both journeymen and master plumbers assess the applicant’s understanding and expertise of the 2024 Uniform Plumbing Code, with fifty open-book questions and one hundred closed-book questions, and the City of Reno’s current material likewise bases the examination on the 2024 UPC. Study therefore keys to the 2024 edition, in full, for both parts.
The adopted-code layer is a different kind of fact, and this page does not collapse it into the tested edition. Under NRS 444.350, construction in Nevada must comply with the Uniform Plumbing Code in the form most recently adopted by IAPMO — a dynamic adoption — subject to State Public Works Board disapproval notices and to local modifications for geographic, topographic, and climatic conditions. No single adopted UPC edition is stated here, because none is keyable in that form, and the examination edition must never be presented as the adopted code: sit the examination on the 2024 UPC, and check locally applicable requirements where the work is performed.
Who may sit: the eligibility ladder
The Master Certification stands on a two-stage ladder, and the second stage is the one candidates most often misjudge. The base requirement is a minimum of four years in a state-registered accredited apprenticeship program, or 8,000 hours of substantiated experience in the plumbing trade. The Master tier then adds its own holding requirement: one year, or 2,000 hours, maintaining and holding a current Nevada Journeyman Certification in good standing. No person may apply for the Nevada masters test without showing proof of holding a current NBOPE certificate as a Nevada journeyman plumber for that period of one year or 2,000 hours.
Proof is documentary. Experience is shown by a notarized Affidavit of Experience, with employment letters on letterhead and W-2 forms accepted as alternates, and falsification results in immediate revocation of the certification. The ladder context beneath the Master tier is the Journeyman Certification itself, which requires the same four years or 8,000 hours without the additional journeyman-holding year, and which sits the same 150-question structure with journeyman content weights that differ from the Master weights printed above.
What the Master Certification authorizes beyond the documented Clark County and City of Reno mandates is not stated in the sources behind this program, and no statewide scope of authority is generalised here. Candidates should confirm the position with the jurisdiction where the work will be performed.
Fees, rescheduling, and recertification — the NBOPE layer only
Every dollar in this section belongs to the NBOPE certification layer, and no dollar from any other Nevada system belongs beside them. The certification examination fee on the current form is $250, for a computer or paper examination. A computer examination at a Prometric Test Center costs $340 — the $250 examination fee plus a $90 Prometric surcharge. No separate board application fee distinct from the examination fee is stated in the current form, and none is invented here.
Rescheduling and cancellation carry a dated scale on the form layer: notice 30 days or more before the sitting carries no penalty; notice five to 29 days before carries a $35 penalty; notice fewer than five days before carries a $50 penalty, and the candidate must contact NITC to obtain eligibility again. Cheating carries the heaviest documented consequence in the system: surrender of materials, a score recorded as zero percent, no refund of the fee, and ineligibility to test for one year.
Recertification runs on its own documented route: a 40-question computer examination at $40, or a continuing-education submission — an eight-hour plumbing class on the 2024 UPC — with a $30 submission fee. There is zero grace period; recertification must be completed before expiration, and that continuing education belongs only to this NBOPE layer.
What the PassProfessor program will cover
Built for this sitting, in its two halves. The program is organised the way the examination is organised: open-book code fluency for Part 1 — finding, reading, and applying the 2024 UPC under time — and closed-book command for Part 2, where general code knowledge and sizing illustrations must be carried in the candidate’s own preparation. The printed Master content weights set the emphasis, with the drainage, venting, storm drainage, and water supply core given the largest share of practice.
Drawings and sizing treated as a first-class subject. Because related drawings carry so much of this examination, the program treats drawing interpretation and sizing work — drain, waste, and vent, gas pipe, storm drainage, and water pipe — as a central study strand rather than a supplement, while stating honestly, as this page does, that the live sitting’s illustrations themselves cannot be reproduced in written practice.
The Nevada structure taught as part of the subject. The separation between the NBOPE certification and Nevada contractor licensing, the NRS 624.240 bridge stated in its exact terms, the documented Clark County and City of Reno mandate, and the distinction between the tested 2024 UPC and Nevada’s dynamic adopted-code layer are all taught as context — because in Nevada, misunderstanding the structure is the fastest route to preparing for the wrong credential.
Independence, stated plainly. PassProfessor is an independent preparation provider, not affiliated with the Nevada Board of Plumbing Examiners or with NITC, and this program is not an NBOPE course. Completing it confers no certification and no eligibility; NBOPE and NITC alone administer the certification route, and candidates apply through their channels. For the full examination breakdown, content weights, and study route, read the companion guide at /nevada-master-plumber-exam-guide/.
Tell me when enrollment opens. The Nevada Master Plumber Certification program is in the works and enrollment is not yet open. Leave an email address and PassProfessor will write to you when the program is ready — and only about this program. No date is promised.
Frequently asked questions
Who issues the Nevada Master Plumber Certification?
The Nevada Board of Plumbing Examiners (NBOPE). NITC administers the examinations, with computer delivery via Prometric test centres.
Is this the same as a Nevada contractor license?
No. The State Contractors Board issues no master license, and an NBOPE certificate does not grant a contractor license — just as a contractor license does not grant an NBOPE certificate.
Where is the certification required?
As documented, from Clark County and the City of Reno. No statewide licence or statewide requirement is claimed.
How is the examination structured?
150 questions in one appointment: 50 open-book in two hours, a short break, then 100 closed-book in two hours.
What code edition is tested?
The 2024 Uniform Plumbing Code, for both certification examinations.
What score passes?
A minimum 75%, published in exactly that form.
How much of the examination is drawings-based?
A great deal. Sanitary Drainage, Vents, and Storm Drainage Related Drawings alone are 34.67% of the Master examination, and the closed-book part tests sizing illustrations across drainage, gas pipe, storm drainage, and water pipe sizing.
What experience does the Master tier require?
Four years in a state-registered accredited apprenticeship program or 8,000 hours of substantiated experience, plus one year or 2,000 hours holding a current Nevada Journeyman Certification in good standing.
What does the examination cost?
$250 for the certification examination, or $340 at a Prometric Test Center — NBOPE/NITC-layer fees on the current form.
What does NRS 624.240 do?
It provides that a person who passes the State Contractors Board’s technical examination and meets the experience and knowledge requirements is qualified for a master’s license if issued by a political subdivision — a bridge to locally issued licenses, not a Board-issued license.
Is PassProfessor affiliated with NBOPE or NITC?
No. PassProfessor is an independent preparation provider. NBOPE and NITC alone administer the certification and its examinations.
When does enrollment open?
The program is in the works and enrollment is not yet open. Leave an email address on this page and PassProfessor will write to you when the program is ready — and only about this program.