- NV-B is the Nevada State Contractors Board Class B trade exam, administered by PSI.
- The exam has 80 multiple-choice questions, a 180-minute limit, and requires 56 correct (70%) to pass.
- PSI charges $95 for the trade exam alone or $140 when bundled with the CMS.
- Class B covers building projects requiring more than two unrelated trades, not single-trade specialty work.
What Is A NV-B, Exactly?
NV-B refers to the Nevada General Building Contractor (Class B) Trade Exam, a licensing test administered by PSI on behalf of the Nevada State Contractors Board. It is not a generic industry certification - it's a state-mandated trade competency exam that anyone applying for a Class B contractor license in Nevada must pass. If you're new to the topic, our companion piece "What Is NV-B?" covers the same ground from a slightly different angle, and "NV-B Meaning" breaks down exactly what each letter and classification represents within the Board's licensing structure.
The "B" classification specifically identifies general building work - projects that require coordination across more than two unrelated building trades on a single job. That distinguishes it from single-trade specialty licenses like plumbing or electrical, which fall under separate classifications entirely.
Who Needs This License
The Class B classification is built for contractors who manage projects spanning multiple trades on a single structure - think residential and commercial building construction where framing, concrete, masonry, and finish work all come together under one contractor's supervision. If your work is confined to one specialty trade, such as plumbing or electrical installation alone, you'd typically pursue a different classification rather than Class B.
General contracting firms, project superintendents stepping into ownership roles, and construction managers seeking to hold their own license all sit in the pool of people who eventually sit for this exam. If you're researching what kinds of roles this license opens up, NV-B Jobs looks at the employment side, while "Is the NV-B Certification Worth It? Complete ROI Analysis 2026" weighs the licensing investment against career outcomes.
Exam Format and Registration
The Class B trade exam is delivered through PSI and is closed book, with one notable exception: code references that are expressly authorized by PSI's current content outline. Candidates aren't guessing what to bring - the outline tells you exactly which references are permitted, so it pays to confirm this before test day rather than assume.
- Format: 80 multiple-choice questions
- Time allowed: 180 minutes
- Passing score: 56 correct answers, or 70%
- Cost: $95 for the trade exam alone, or $140 if scheduled together with the CMS (Contractors Management Survey exam)
Bundling the trade exam with the CMS at the same PSI appointment is worth considering purely from a logistics and cost standpoint, since both are required pieces of the licensing puzzle. For a full breakdown of every fee involved in getting licensed - not just the exam charge - see "NV-B Certification Cost 2026: Complete Pricing Breakdown". If you want the exact numeric bar you're aiming for and how PSI calculates it, "NV-B Passing Score 2026: Exactly What You Need to Pass" goes deeper. Scheduling logistics, including how far in advance you should book your PSI appointment, are covered in "NV-B Exam Dates 2026: Testing Windows, Deadlines & Scheduling".
Key Takeaway
Decide upfront whether you're scheduling the trade exam alone ($95) or bundling it with the CMS ($140) - this affects your exam-day time commitment and your prep sequencing.
The 11 Domains You'll Be Tested On
PSI's content outline organizes the 80 questions across eleven domains. Three of them - Concrete, Metals, and General Code, Plan Reading, and Estimating - are tied as the largest domains, meaning they collectively account for a disproportionate share of your exam. A domain-by-domain breakdown with subtopics lives in "NV-B Exam Domains 2026: Complete Guide to All 11 Content Areas", but here's the landscape at a glance.
Domain 2: Concrete
One of the three largest domains. Expect questions on mix design principles, reinforcement placement, formwork, curing, and slab-on-grade considerations relevant to general building projects.
- Concrete placement and finishing sequencing
- Reinforcement and rebar practices
Domain 4: Metals
Also tied for largest domain. Covers structural steel, connections, fasteners, and metal framing as they apply to buildings requiring multi-trade coordination.
- Structural metal framing systems
- Connection and fastening methods
Domain 10: General Code, Plan Reading, and Estimating
The third domain tied for largest weight. This area tests your ability to interpret building codes, read construction plans accurately, and produce reasonable estimates - core general contracting skills.
- Reading and interpreting construction drawings
- Applying general code requirements to building scenarios
- Estimating materials and costs
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 specific to state law around utility locates before excavation, and it's easy to overlook if you're studying from generic construction materials rather than Nevada-specific content.
| Domain | Relative Weight |
|---|---|
| Concrete | Tied for largest |
| Metals | Tied for largest |
| General Code, Plan Reading, and Estimating | Tied for largest |
| Site Work | Standard |
| Masonry | Standard |
| Carpentry | Standard |
| Thermal and Moisture Protection | Standard |
| Doors and Windows | Standard |
| Drywall and Finishes | Standard |
| Safety | Standard |
| Nevada One Call | Standard |
Because three domains carry equal top weighting rather than one dominant category, you can't simply cram one topic and coast. For a realistic assessment of how tough this balance makes the exam, read "How Hard Is the NV-B Exam? Complete Difficulty Guide 2026", and if you want data-driven context on outcomes, check "NV-B Pass Rate 2026: What the Data Shows".
The Full Licensure Path Beyond the Exam
Passing the trade exam is one piece of a larger licensing process overseen by the Nevada State Contractors Board. Full licensure requires:
- Board approval of the application
- Passing the CMS (Contractors Management Survey)
- A qualifying individual with four years of relevant experience earned within the prior 15 years
- Approved education, which may substitute for up to three of those four years
Once licensed, Nevada contractor licenses operate on a biennial cycle. The Board charges a $300 application fee and a $600 biennial license fee - separate from the PSI exam fees discussed earlier. If you're mapping out every prerequisite before you even schedule an exam, "NV-B Requirements 2026: Eligibility, Prerequisites & How to Qualify" walks through eligibility in detail.
The NASCLA Shortcut
There's one notable alternative path for the trade exam portion specifically: a qualifying score on the NASCLA Accredited Examination for Commercial General Building Contractors can replace the Class B trade exam requirement. This does not, however, exempt you from the CMS - that requirement stands regardless of which trade exam path you take. If you already hold a NASCLA score from prior work in another state, it's worth confirming with the Board whether it satisfies Nevada's trade exam requirement before you register for PSI's Class B exam separately.
How to Approach Preparation by Week
Generic study techniques only get you so far with a licensing exam this specific. What matters more is sequencing your review around the domains that carry the heaviest weight and the topics most likely to trip up candidates unfamiliar with Nevada's particular code references.
Concrete and Metals
- Work through mix design, reinforcement, and structural steel connection questions since these are two of the three tied-for-largest domains
- Review formwork and metal framing systems side by side, since both appear heavily on the outline
General Code, Plan Reading, and Estimating
- Practice reading construction plans and applying general code requirements, the third tied-for-largest domain
- Drill estimating scenarios using realistic building takeoffs
Remaining Trade Domains
- Cover Site Work, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, and Drywall and Finishes
- Pay close attention to Safety and Nevada One Call, which are Nevada-specific and easy to underweight
Timed Practice and Review
- Simulate the 180-minute, 80-question format under real time pressure
- Review only the authorized code references you'll be permitted to bring, per PSI's outline
For a structured, step-by-step preparation plan built entirely around this exam's format and domain weighting, see "NV-B Study Guide 2026: How to Pass on Your First Attempt". If you'd rather review condensed must-know facts the week before your appointment, "NV-B Cheat Sheet 2026: One-Page Review of Must-Know Facts" is built for that final pass. And for hands-on practice under realistic conditions, our practice test platform lets you rehearse the 80-question, 180-minute format before you ever sit down at a PSI test center.
Key Takeaway
Sequence your study around the three tied-for-largest domains first - Concrete, Metals, and General Code, Plan Reading, and Estimating - before spreading time across the remaining eight.
Beyond formal study, working through realistic scenario questions on the main practice test site repeatedly is one of the most direct ways to get comfortable with PSI's multiple-choice question style before exam day. Since the exam is closed book apart from Board-authorized code references, practicing recall rather than lookup is essential - you won't have a reference manual to lean on for most of the 80 questions.
Frequently Asked Questions
No. The Class B trade exam tests construction knowledge across the 11 domains, while the CMS (Contractors Management Survey) is a separate exam required for full licensure. Both can be scheduled together through PSI for $140.
The exam is closed book, with one exception: code references expressly authorized by PSI's current content outline for the Class B trade exam. Check the outline in advance to confirm exactly what's permitted.
A qualifying NASCLA Accredited Examination for Commercial General Building Contractors score can replace the Class B trade exam. It does not replace the CMS, which is still required separately.
Generally no. Class B is intended for buildings requiring more than two unrelated trades under one contractor's supervision. Specialty trades like plumbing and electrical typically require their own separate classifications.
Beyond the $95-$140 PSI exam fee, the Nevada State Contractors Board charges a $300 application fee and a $600 biennial license fee. A full cost breakdown is available in NV-B Certification Cost 2026: Complete Pricing Breakdown.