What Is NV-C15 Certification?

What NV-C15 Certification Actually Is

NV-C15 refers to the Nevada C-15 Roofing and Siding Contractor Trade Exam, the licensing exam candidates must pass to hold the C-15 classification under the Nevada State Contractors Board. This is important to state plainly because "C-15" and similar acronyms get reused across different licensing boards and industries in other states, and confusing them with Nevada's roofing and siding classification can send a candidate studying the wrong material entirely. On this site, NV-C15 always means the Nevada roofing and siding trade exam - nothing else.

Unlike a narrower roofing-only exam, the NV-C15 exam that PSI delivers covers the full C-15 Roofing and Siding Contractor trade, which means siding, sheet metal, flashing, and photovoltaic-related roofing topics are fair game alongside traditional roofing systems. If you've been told the exam only tests shingles and underlayment, that's an incomplete picture - the actual blueprint is broader.

Who Administers the NV-C15 Exam

The Nevada State Contractors Board owns the licensing process, but the actual test delivery is handled by PSI, a third-party testing vendor. PSI publishes the exam content outline, known as the candidate bulletin, which lays out scoring rules, references, and permitted testing tools. The version referenced for this article is dated March 25, 2026.

It's worth noting that PSI administers the full C-15 Roofing and Siding Contractor trade examination - not a smaller, narrower C-15a Roofing-only version. If you've seen references elsewhere to a shorter roofing-specific exam, that's a different scope than the one covered here. Before you schedule anything, the Nevada State Contractors Board must approve your application; scheduling with PSI happens only after that approval.

What the NV-C15 Exam Covers

The NV-C15 blueprint is organized into nine domains. Each represents a category of job-site knowledge a licensed C-15 contractor is expected to have, from safety protocols to solar-adjacent roofing work. For a full breakdown of how deeply each area is tested, see the NV-C15 Exam Domains 2026: Complete Guide to All 9 Content Areas.

Because Steep Roofing carries the most weight, many candidates start their review there. But don't neglect the other eight - collectively they still make up the majority of the 60 scored questions. If you want a fast-reference summary of must-know facts across all nine domains, the NV-C15 Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for that purpose.

Exam Format, Timing, and Scoring

The NV-C15 trade exam is computer-delivered and uses a multiple-choice format throughout - no essay or fill-in-the-blank sections. Candidates get 120 minutes to answer 60 scored questions, and PSI may quietly insert between 1 and 10 additional unscored experimental questions within that same time block. You won't know which questions are experimental, so every question should be treated as if it counts.

To pass, you need 45 correct answers out of 60, which works out to 75%. That threshold applies to the scored questions only - experimental items don't affect your result either way.

For a deeper look at exactly how the 45-of-60 threshold is calculated and what it means for your margin of error, see NV-C15 Passing Score 2026: Exactly What You Need to Pass. And if you're trying to gauge how tough this actually is relative to other trade exams, How Hard Is the NV-C15 Exam? Complete Difficulty Guide 2026 walks through that in detail.

Fees, Registration, and Scheduling Mechanics

Exam fees are structured around what portions you're testing on. A single examination portion costs $95. If you're testing on both the trade exam and the separate Contractor Management Survey (CMS) portion together, the combined fee is $140. Retakes follow the same fee schedule - there's no discount for repeat attempts.

These exam fees are separate from the broader licensing costs charged by the Nevada State Contractors Board, including the $300 application fee and $600 initial licensing/biennial renewal cost, plus any applicable Residential Recovery Fund charges. For the complete cost picture across the entire licensing path, read NV-C15 Certification Cost 2026: Complete Pricing Breakdown.

Scheduling isn't something you do independently of the Board - Board approval of your application must happen before you can schedule your exam with PSI. Once approved, required examinations must be completed within six months after your application submission, so don't let approval sit unused. If you fail, retakes require a two-week waiting period, and three failures on the same application will void it entirely, meaning you'd need to reapply from scratch. Timelines and testing windows are covered further in NV-C15 Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Eligibility Before You Can Sit for the Exam

You can't just register and test - the Nevada State Contractors Board requires that trade qualifiers generally have four years of relevant journey-level, foreman, supervisory, or contractor experience within the preceding fifteen years. Approved education can substitute for up to three of those four years, but experience alone or in combination with education is the baseline.

Beyond raw experience, the Board also wants documented proof: experience verification, a resume or other accepted evidence, financial documentation, and applicable bonding are all separate pieces of the licensing puzzle beyond simply passing the trade exam. None of these substitute for the exam itself - they run in parallel with it. A full walkthrough of what counts as qualifying experience and how substitutions work is in NV-C15 Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Open-Book References and In-Room Testing Rules

The NV-C15 exam is open book only for one specific reference: the listed 2018 International Building Code. Other commonly referenced materials - NRCA manuals, OSHA publications, and other listed references - are study-only resources. You can learn from them ahead of time, but you cannot bring them into the exam room.

For the one permitted reference, you're allowed to prepare it in advance: highlighting, underlining, and permanent tabs are all acceptable before test day. What's not allowed is adding handwritten notes to that reference either before or during testing, and you cannot insert additional loose papers into it. A silent, nonprinting, nonprogrammable calculator is permitted for any calculation-based questions.

Who Pursues NV-C15 and Why

Candidates pursuing the C-15 classification are typically roofing and siding professionals - foremen, supervisors, and tradespeople with journey-level experience - who intend to operate or supervise as licensed contractors in Nevada rather than work exclusively under someone else's license. Because the exam spans nine domains covering everything from Sheet Metal and Flashing to Photovoltaic Systems, it's meant to validate broad competency across the roofing and siding trade, not just one narrow skill.

If you're weighing whether pursuing this license path makes sense for your career, Is the NV-C15 Certification Worth It? Complete ROI Analysis 2026 and NV-C15 Salary Guide 2026: Complete Earnings Analysis both dig into that question in more depth, and NV-C15 Jobs looks at where licensed contractors typically find work.

Building a Preparation Plan Around the Domains

Because Steep Roofing carries the most questions of any domain, it deserves proportionally more study time than any single one of the other eight. A reasonable approach is to front-load Steep Roofing early in your prep schedule while it's fresh, then rotate through Roofing Substrates, Roofing Repairs, and Sheet Metal and Flashing before finishing with the smaller-footprint domains like Elastomeric Roofing, Built-up Bituminous Roofing, Siding, and Photovoltaic Systems.

For a structured, week-by-week plan built specifically around passing on your first attempt, see the NV-C15 Study Guide 2026: How to Pass on Your First Attempt. And once you're ready to test your recall under exam-like time pressure, the practice tests on our main site mirror the 60-question, 120-minute structure so you're not caught off guard by pacing on test day.

It also helps to review how actual pass outcomes tend to break down before you walk in - the NV-C15 Pass Rate 2026: What the Data Shows article looks at that in more depth, without relying on numbers that aren't part of the official bulletin.

Frequently Asked Questions