- The Class B trade exam has 80 multiple-choice questions, a 180-minute limit, and a 56-question passing threshold.
- PSI charges $95 for the trade exam alone or $140 when it's scheduled with the CMS.
- Concrete, Metals, and General Code, Plan Reading, and Estimating are tied as the largest domains - train these first.
- A qualifying NASCLA Accredited Examination score can replace the trade exam but never replaces the CMS.
What "NV-B Training" Actually Covers
Training for the Nevada General Building Contractor (Class B) trade exam is not generic construction education - it's targeted preparation for a specific PSI-administered examination on behalf of the Nevada State Contractors Board. Class B licensure applies to buildings requiring more than two unrelated building trades, which means the exam blends structural, code, and estimating knowledge rather than deep specialty content like plumbing or electrical wiring (those typically require separate classifications).
Effective training means mastering the material the current PSI content outline actually tests, in the format it's actually tested. Before building a study plan, it helps to understand exactly what NV-B is and how licensure requirements connect to the exam itself - see the full breakdown in NV-B Requirements 2026.
Exam Format You're Training For
Every training decision should map back to the exam's actual structure:
- 80 multiple-choice questions across all 11 domains
- 180 minutes to complete the exam
- 56 correct answers required to pass (70%)
That works out to roughly two minutes per question on average, but domain questions vary in complexity - a straightforward Nevada One Call question moves fast, while an estimating problem may take several minutes to calculate. Training should include timed practice sets that mimic this pacing pressure, not just untimed flashcard review. For a deeper look at how the scoring threshold is calculated and what it means for how many questions you can miss, see NV-B Passing Score 2026.
If you're still deciding how much training time to budget, How Hard Is the NV-B Exam? walks through the factors that make this test more demanding than a typical multiple-choice quiz - largely the breadth of trades covered in a single sitting.
Registration and Fee Mechanics
Training plans should account for the real cost and scheduling logistics of testing with PSI:
- $95 for the trade exam scheduled alone
- $140 when the trade exam and CMS (Contractors Management Survey) are scheduled together
- Licensure ultimately requires Board approval, the CMS, and 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 four years
- Beyond exam fees, the Board charges a $300 application fee and a $600 biennial license fee once you're approved
Because Nevada licenses are biennial, training and renewal planning go hand in hand. For the complete fee picture, including how the CMS bundling affects your total spend, read NV-B Certification Cost 2026.
Key Takeaway
If you already hold a qualifying NASCLA Accredited Examination for Commercial General Building Contractors score, it can substitute for the Class B trade exam - but you still must complete the CMS separately. Don't train for a test you may not need to take.
Domain-by-Domain Training Priorities
The exam covers 11 domains, and training time should not be spread evenly across them. Concrete, Metals, and General Code, Plan Reading, and Estimating are tied as the largest domains on the current outline, which makes them the highest-leverage areas for study hours. For a full walkthrough of every content area, see NV-B Exam Domains 2026.
Domain 2: Concrete
One of the three tied largest domains. Candidates need working knowledge of mix design basics, reinforcement placement, formwork, curing conditions, and common failure points.
- Footings, slabs, and foundation wall specifications
- Reinforcing steel placement and cover requirements
- Curing time and weather-related considerations
Domain 4: Metals
Also tied as a largest domain. Training here should cover structural steel connections, fasteners, and metal framing components used in commercial and residential builds that require multiple trades.
- Bolted vs. welded connections
- Load-bearing metal stud framing
- Corrosion protection and fastener selection
Domain 10: General Code, Plan Reading, and Estimating
The third tied-largest domain, and arguably the most cross-cutting. Plan reading and estimating questions often layer code knowledge on top of blueprint interpretation and quantity takeoffs.
- Reading elevations, sections, and schedules
- Applying code minimums to plan details
- Material quantity and cost estimating logic
The remaining eight domains - Site Work, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, Drywall and Finishes, Safety, and Nevada One Call - still appear on every exam and can't be skipped, but they typically carry lighter individual weight than the tied top three. Nevada One Call, for example, is a narrower topic (utility locate procedures before excavation) that's fast to master but easy to forget if it's left until the last minute.
Closed-Book Rules and Code References
The Board classifies the trade exam as closed book, with one important exception: code references expressly authorized by the current PSI content outline. This distinction matters enormously for how you train.
- Memorize: Terminology, sequencing of construction processes, general code principles, safety protocols, and estimating formulas - these won't have a reference available during the exam unless specifically authorized.
- Practice navigating: Any authorized code reference material, so you can locate a specific section quickly under time pressure rather than reading from scratch.
Confirm exactly which references are authorized before your test date, since outlines are updated periodically. A quick review the week before your exam pairs well with a condensed reference like the NV-B Cheat Sheet 2026, which consolidates must-know facts into a one-page format.
Building a Realistic Training Timeline
A structured timeline keeps training aligned with domain weighting instead of drifting toward whatever topic feels easiest that week. The schedule below assumes a multi-week runway before your scheduled exam date; adjust the pace based on your own availability and prior field experience.
Foundations and Concrete
- Review exam format: 80 questions, 180 minutes, 56 to pass
- Deep dive into Concrete: mix design, reinforcement, curing
- Light review of Site Work fundamentals
Metals and Structural Systems
- Structural steel connections and metal framing
- Carpentry cross-reference points with Metals
- Practice questions mixing both domains
Code, Plan Reading, and Estimating
- Blueprint interpretation drills
- Quantity takeoff and cost estimating practice
- General code principle review
Remaining Domains and Timed Practice
- Masonry, Thermal and Moisture Protection, Doors and Windows
- Drywall and Finishes, Safety, Nevada One Call
- Full-length timed practice exam under real conditions
For a more detailed, day-by-day breakdown of this kind of preparation, the NV-B Study Guide 2026 expands each week into specific tasks and resources. And once you've built a baseline, running timed sets on our practice test platform is the fastest way to see which domains still need work before test day.
Comparing Training Paths
| Path | What It Involves | Best For |
|---|---|---|
| Self-directed domain study + practice exams | Working through all 11 domains independently, using practice questions on our practice test site to gauge readiness | Candidates with field experience who need structured review, not fundamentals |
| NASCLA score substitution | Using a qualifying NASCLA Accredited Examination score to replace the Class B trade exam | Candidates who already hold that credential and want to skip re-testing on trade content |
| Bundled trade exam + CMS scheduling | Registering for both at once for $140 instead of scheduling separately | Candidates ready to complete both requirements in one testing session |
Note that even with NASCLA substitution, the CMS is still required - it is never waived. Review the full eligibility picture in NV-B Requirements 2026 before choosing a path.
Who This License Is Actually For
Class B licensure is aimed at contractors overseeing projects that involve more than two unrelated building trades - think ground-up commercial buildings, multi-trade renovations, and general contracting roles where you're coordinating concrete, framing, and finish work under one scope. It's distinct from specialty licenses like plumbing or electrical, which generally require their own classifications entirely.
If you're weighing whether this license fits your career goals, NV-B Jobs outlines the kinds of roles and project types where this classification is typically required, and Is the NV-B Certification Worth It? looks at the return on the time and fees involved. For income context specific to this classification, see the NV-B Salary Guide 2026.
Key Takeaway
Training time is best spent on the trades and code content that overlap multiple project types - Concrete, Metals, and estimating skills apply across nearly every Class B project, unlike narrower domains like Nevada One Call.
Frequently Asked Questions
The exam contains 80 multiple-choice questions, and you need 56 correct answers to pass, which is 70%.
You're given 180 minutes to complete all 80 questions.
No, the Board classifies it as closed book, except for code references expressly authorized by the current PSI content outline.
PSI charges $95 for the trade exam alone, or $140 if you schedule the trade exam and CMS together.
A qualifying score on the NASCLA Accredited Examination for Commercial General Building Contractors can replace the Class B trade exam, but you must still complete the CMS separately.