- NV-B is the Nevada State Contractors Board Class B trade exam, administered by PSI, not a national certification.
- The exam has 80 multiple-choice questions, a 180-minute limit, and requires 56 correct answers (70%) to pass.
- Concrete, Metals, and General Code, Plan Reading, and Estimating are tied as the largest tested domains.
- Passing NV-B alone doesn't grant a license - you still need Board approval, the CMS, and qualifying experience.
What NV-B Actually Is
NV-B refers specifically to the Nevada General Building Contractor (Class B) Trade Exam, a licensing examination required by the Nevada State Contractors Board (NSCB) for individuals seeking to hold a Class B general building contractor license in Nevada. The exam itself is administered by PSI, a third-party testing vendor that the Board contracts with to deliver contractor trade exams and the associated Contractors Management Survey (CMS) statewide.
It's easy to confuse NV-B with other credentials that share the same two-letter shorthand, but in the context of this site and Nevada construction licensing, NV-B means one thing only: the closed-book trade knowledge exam that verifies a candidate understands the building trades, codes, and estimating practices needed to supervise Class B construction work in Nevada. If you're researching what this abbreviation means more broadly, our companion pieces on NV-B Meaning and What Does NV-B Stand For? dig further into terminology, while this article focuses on the exam mechanics themselves.
Who Needs the NV-B Exam
The NV-B exam is aimed at the qualifying individual named on a Nevada Class B contractor license application - often the owner, a managing employee, or a designated responsible managing employee of a construction company. If your company plans to bid and perform general building work in Nevada that spans multiple trades (framing, concrete, masonry, drywall, and so on) rather than a single specialty scope, the Class B classification - and therefore this exam - is usually the relevant path.
General contractors, project superintendents, estimators moving into ownership roles, and construction managers preparing to become the qualifying party on a license all typically sit for this exam. Employers who hire based on this credential are generally Nevada-licensed general building contracting firms looking to add a qualified individual who can legally hold the Class B license for the company. For a deeper breakdown of who qualifies and what prerequisites apply, see NV-B Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
If your scope of work involves more than two unrelated trades on a single project, Class B - and the NV-B exam - is likely the classification you need, not a single specialty license.
Exam Format and Scoring
The NV-B exam is structured in a straightforward, predictable way:
- 80 multiple-choice questions
- 180 minutes total testing time
- 56 correct answers required to pass, equal to 70%
- Closed book, except for specific code references expressly authorized by the current PSI content outline
That closed-book-with-exceptions detail matters. The Board doesn't allow candidates to bring in arbitrary reference material - only the code references named in the current outline are permitted, and it's the candidate's responsibility to know exactly which references are allowed before test day. For an exact walkthrough of what "passing" requires numerically, read NV-B Passing Score 2026: Exactly What You Need to Pass. If you want a broader sense of how tough the exam feels in practice relative to its format, How Hard Is the NV-B Exam? Complete Difficulty Guide 2026 covers that in detail, and NV-B Pass Rate 2026: What the Data Shows looks at outcome data.
The 11 Domains Tested
PSI's content outline for the Class B trade exam breaks the material into eleven domains. Understanding how these are weighted - and which ones overlap in practice - is the single most useful thing you can do before scheduling your exam date. Our full breakdown, NV-B Exam Domains 2026: Complete Guide to All 11 Content Areas, goes deeper into each one, but here's the landscape:
Domain 2: Concrete
One of three domains tied for the largest share of the exam. Expect questions on mix design basics, forming, reinforcement placement, curing, and code-driven tolerances.
- Concrete is tested as heavily as the general code/estimating domain, so don't under-prepare it relative to "softer" trade topics
Domain 4: Metals
Also tied for largest domain weight. Covers structural steel, connections, and metal framing components as they relate to general building supervision - not welding-certification-level depth, but enough to manage and inspect the work.
- Pair your review of Metals with Domain 5 (Carpentry) since structural framing questions often overlap conceptually
Domain 10: General Code, Plan Reading, and Estimating
The third domain tied for top weight. This is where blueprint literacy, takeoffs, and code-application questions concentrate.
- Because this domain touches every other trade area, strengthening it also reinforces your recall across Domains 1-9
The remaining domains - Site Work, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, Drywall and Finishes, Safety, and Nevada One Call - round out the outline. Nevada One Call in particular is a Nevada-specific requirement (the state's underground utility notification system) that candidates from other states often overlook entirely, since it isn't part of generic contractor exam prep elsewhere.
| Domain | What It Emphasizes |
|---|---|
| Site Work | Excavation, grading, drainage basics |
| Concrete | Tied for largest weight; forming, curing, reinforcement |
| Masonry | Block, brick, mortar, and structural masonry practices |
| Metals | Tied for largest weight; structural steel and connections |
| Carpentry | Framing systems and rough carpentry |
| Thermal and Moisture Protection | Insulation, waterproofing, roofing systems |
| Doors and Windows | Installation and code clearance requirements |
| Drywall and Finishes | Interior finish systems and application standards |
| Safety | Jobsite safety practices and hazard awareness |
| General Code, Plan Reading, and Estimating | Tied for largest weight; blueprint and takeoff literacy |
| Nevada One Call | Nevada-specific underground utility notification rules |
Registration, Fees, and Scheduling
Registration for NV-B runs through PSI, and the fee structure is simple:
- $95 for the trade exam alone
- $140 when the trade exam and the CMS are scheduled together
Scheduling both exams in the same sitting is generally more efficient logistically, since you're already prepared to travel to a PSI test center and have blocked out the study time. For a complete cost picture - including the separate Board application and license fees discussed below - see NV-B Certification Cost 2026: Complete Pricing Breakdown. If you're mapping out when to sit for the exam relative to your license application timeline, NV-B Exam Dates 2026: Testing Windows, Deadlines & Scheduling walks through the scheduling process in more detail.
Key Takeaway
Scheduling the trade exam and CMS together costs $140 total versus $95 for the trade exam alone - factor that into your prep timeline rather than treating them as two separate testing events.
How NV-B Fits Into Licensure
Passing the NV-B exam is a milestone, not the finish line. Nevada licensure requires several pieces to come together:
- Board approval of the application
- The CMS (Contractors Management Survey), a separate requirement from the trade exam
- A qualifying individual with four years of relevant experience earned within the prior 15 years (approved education may substitute for up to three of those years)
Notably, a qualifying score on the NASCLA Accredited Examination for Commercial General Building Contractors can be used to satisfy the Class B trade exam requirement in place of sitting for NV-B directly - but it does not substitute for the CMS, which every applicant still must complete separately.
Once licensed, Nevada contractor licenses operate on a biennial renewal cycle. The Board charges a $300 application fee and a $600 biennial license fee, both of which are separate from the PSI exam fees discussed above. Candidates researching the full financial and time commitment of becoming licensed should read Is the NV-B Certification Worth It? Complete ROI Analysis 2026, and those weighing career outcomes can review NV-B Salary Guide 2026: Complete Earnings Analysis alongside NV-B Jobs for a sense of where a Class B license typically leads.
Building a Study Plan Around the Domains
Because Concrete, Metals, and General Code/Plan Reading/Estimating are tied as the heaviest domains, a smart study sequence front-loads those three areas early - while there's still time to revisit weak spots - and treats the remaining eight domains as a second pass. A simple technique like spaced repetition works well here specifically because it lets you cycle back through Concrete and Metals terminology multiple times across a multi-week plan rather than cramming once.
Concrete and Metals
- Build a terminology list for both tied top-weighted domains
- Work through practice questions covering reinforcement, curing, and structural connections
General Code, Plan Reading, and Estimating
- Practice reading plan sets and performing basic takeoffs
- Review how code references are applied across trades, since this domain touches all others
Remaining Trade Domains
- Cover Site Work, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, Drywall and Finishes
- Focus on install standards and common code clearances
Safety, Nevada One Call, and Full Review
- Study Nevada One Call rules specifically, since they're state-specific and easy to overlook
- Take full-length timed practice exams to simulate the 180-minute format
For a structured week-by-week plan with more specifics, our dedicated resource - NV-B Study Guide 2026: How to Pass on Your First Attempt - expands on this framework. Once you're closer to test day, a condensed reference like the NV-B Cheat Sheet 2026: One-Page Review of Must-Know Facts can help you do a final pass across all 11 domains quickly. And if you want to test your readiness under realistic conditions before scheduling with PSI, you can run through timed questions on our main practice test platform to get a feel for the 80-question, 180-minute format ahead of time.
Key Takeaway
Sequence your study so the three tied-largest domains - Concrete, Metals, and General Code/Plan Reading/Estimating - get the earliest and most repeated attention, not the last-minute cram.
Frequently Asked Questions
No. NV-B is the trade exam component. Full licensure also requires Board approval, the CMS, and documented qualifying experience - the exam is one required piece, not the entire process.
A qualifying score on the NASCLA Accredited Examination for Commercial General Building Contractors can substitute for the Class B trade exam. However, it does not replace the CMS, which is still required regardless of which trade exam route you take.
You need 56 correct answers out of 80 questions, which equals 70%. See NV-B Passing Score 2026: Exactly What You Need to Pass for a full explanation.
The exam is closed book except for code references expressly authorized by the current PSI content outline. Bringing unauthorized materials is not permitted, so confirm the approved reference list before your test date.
Nevada One Call is the state's underground utility notification system, and general building contractors are expected to understand it as part of responsible site work practices - it's a Nevada-specific domain that out-of-state candidates often underestimate.