NM-GB98 Certification

What Is NM-GB98 Certification?

The NM-GB98 General Building Contractor Exam is the technical licensing exam administered for New Mexico's General Building classification. It is regulated by the New Mexico Regulation and Licensing Department, Construction Industries Division, with computer-based testing delivered through PSI. Passing NM-GB98 is one of the core steps toward becoming a licensed general building contractor in New Mexico, alongside meeting experience requirements and satisfying the state's Business and Law obligation.

Unlike a single-part credentialing exam, NM-GB98 is actually a combination of two technical exams taken together: the GB-2 Residential Building Contractor Part 1 and the GB-98 General Building Contractor Part 2. If you're just starting your research, our companion pieces on What Is NM-GB98? and NM-GB98 Meaning walk through the terminology in more depth, while this article focuses on the structure and mechanics of the certification itself.

Who Regulates It and How Testing Works

The Construction Industries Division oversees exam approval, while PSI handles scheduling and delivery at computer-based testing centers. The current PSI contractor candidate information bulletin was updated April 3, 2026, and it governs the rules candidates must follow on test day, from accepted identification to reference material handling.

Because PSI updates bulletins periodically, candidates should always confirm they're reading the current version before registering. For a broader look at how the testing authority structures eligibility windows and score validity, see NM-GB98 Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Exam Structure: GB-2 Part 1 and GB-98 Part 2

The combination technical exam is made up of two distinct parts, and understanding their differences is essential to pacing your preparation correctly.

Each technical part must independently meet the 75% threshold - a strong score on one part does not offset a weak score on the other. For a deeper walkthrough of exactly what "passing" means in this context, read NM-GB98 Passing Score 2026: Exactly What You Need to Pass.

All 17 Domains Breakdown

NM-GB98's content is broken into 17 domains split across the two parts. Part 1 domains skew toward residential-scale sitework, carpentry, and roofing, while Part 2 leans heavily into concrete, masonry, metals, and code/plan reading - the largest single domain on the entire exam.

Part 2 shifts scale and complexity toward commercial and general building practices:

For a full domain-by-domain study strategy with weighting rationale, see NM-GB98 Exam Domains 2026: Complete Guide to All 17 Content Areas. If you're trying to gauge how challenging this content mix actually is compared to expectations, How Hard Is the NM-GB98 Exam? Complete Difficulty Guide 2026 breaks down the difficulty factors domain by domain.

The Business and Law Requirement

New contractor candidates must satisfy a Business and Law requirement in addition to the technical exam. There are two paths:

• Pass the PSI Business and Law examination: $68.88, 50 questions, 130 minutes, open book, 75% required to pass.
• Complete an approved Business and Law course in lieu of the exam.

Because this requirement is separate from the GB-2/GB-98 combination exam, candidates need to plan for it as its own registration, fee, and study block rather than assuming it's bundled into the technical test day.

Eligibility and Experience Requirements

Before you can sit for NM-GB98, you must document qualifying experience. The requirement is four years and 8,000 hours of qualifying construction experience within the preceding 10 years. Approved education or training may receive half-time credit toward up to one-half of that requirement, which can meaningfully shorten the timeline for candidates who have completed relevant coursework.

There's also an administrative step tied to eligibility: a qualifying-party application and work-affidavit filing, which carries a $36 fee. Once approved, exam eligibility is valid for six months, and any passing scores you earn remain valid for one year afterward - so timing your registration and study plan matters. A full walkthrough of documentation and affidavit mechanics is available in NM-GB98 Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Fees and Costs Breakdown

Understanding the full fee structure helps you budget realistically for the entire licensing path, not just the exam itself.

These figures cover exam-related costs only; they don't include study materials, reference books, or any licensing fees charged separately by the Construction Industries Division. For a complete cost picture including how retakes affect your total spend, see NM-GB98 Certification Cost 2026: Complete Pricing Breakdown.

Approved References and Calculator Rules

Both technical parts and the Business and Law exam are open book, which changes the nature of preparation - the exam tests your ability to locate and apply information quickly, not pure memorization. Approved references include the listed 2021 New Mexico building codes, the 2021 IRC or IBC as applicable to each part, and approved trade texts.

PSI's rules on reference materials are specific:

• References must be bound.
• You may highlight, underline, index, and permanently tab your references before test day.
• References may not contain handwritten notes or loose inserted papers.
• A silent, nonprinting, nonprogrammable calculator is permitted.

Open-book access is a major advantage, but only if you've already built familiarity with your code books before the test - flipping through an unfamiliar 2021 IBC under a 310-minute clock is not a viable strategy. Tab your references by domain topic (foundations, concrete, masonry, metals, roofing, general code) so you can jump directly to relevant sections during the exam.

Scheduling, Deadlines, and Retakes

Once your eligibility is approved, you have a six-month window to schedule and sit for the exam through PSI's computer-based testing centers. If you pass one part but not the other, only the failed part needs to be retaken at the $134.53 single-part fee - you don't have to repay the full combination fee. Passing scores remain valid for one year, giving some flexibility if you need to retake a component or sequence your Business and Law completion separately.

For details on how testing windows and scheduling logistics typically work throughout the year, see NM-GB98 Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Building a Domain-Based Study Plan

Given the uneven weighting across NM-GB98's 17 domains, a generic study calendar wastes time. The single most efficient move is prioritizing time proportional to question count - especially the 27-question Part 2 General Code, Plan Reading, and Estimating domain, which alone carries more weight than several smaller domains combined.

For a more granular first-attempt strategy, including how to sequence Business and Law relative to the technical parts, read NM-GB98 Study Guide 2026: How to Pass on Your First Attempt. You can also build timed familiarity with the question format using the practice exams at NM-GB98 Exam Prep.

Who Hires GB-98 Certified Contractors

Passing NM-GB98 supports licensure as a New Mexico General Building contractor, a classification recognized by general contracting firms, residential and commercial builders, and construction companies bidding on general building scopes across the state. Because the exam spans both residential (GB-2) and general building (GB-98) content, license holders are positioned to work across a wider range of project types than a residential-only classification would allow.

If you're weighing whether the time and fee investment make sense for your career path, Is the NM-GB98 Certification Worth It? Complete ROI Analysis 2026 and NM-GB98 Salary Guide 2026: Complete Earnings Analysis go into more detail. For a look at how license holders and firms describe hiring and job opportunities tied to this credential, see NM-GB98 Jobs.

Frequently Asked Questions

For a condensed, at-a-glance summary of every fact covered here - fees, question counts, timing, and domain weights - bookmark the NM-GB98 Cheat Sheet 2026: One-Page Review of Must-Know Facts, and start practicing against realistic question formats at NM-GB98 Exam Prep.