NM-GB98 Study Guide 2026: How to Pass on Your First Attempt

What the NM-GB98 Exam Actually Involves

The New Mexico GB-98 General Building Contractor Exam is administered under the New Mexico Regulation and Licensing Department, Construction Industries Division, with testing delivered through PSI's computer-based network. If you're preparing for this specific credential, it's worth starting with a broad orientation before drilling into details - our What Is NM-GB98? and NM-GB98 Meaning guides walk through the basics if you're still confirming this is the right license path for you.

Unlike a single-session test, the GB-98 credential is issued through a combination technical exam: candidates sit for GB-2 Residential Building Contractor Part 1 and GB-98 General Building Contractor Part 2 in the same registration. Together the two parts total 180 questions across 535 minutes of allotted time. This is a long testing day, and pacing across two distinct question banks - residential-focused Part 1, then broader Part 2 - is part of what makes this exam feel different from a typical trade license test.

Registration, Fees, and PSI Scheduling

The current PSI contractor candidate bulletin governing this exam was updated April 3, 2026, so always confirm you're studying from the latest version before test day. Key cost figures to plan around:

• GB-98 combination technical exam: $269.06 (covers both GB-2 Part 1 and GB-98 Part 2 in one sitting)
• One-part retake: $134.53 if you pass one part but need to retest the other
• PSI Business and Law exam: $68.88 separately
• Qualifying-party application and work-affidavit fee: $36

For a full breakdown of every fee a candidate encounters - application, testing, and renewal-adjacent costs - see NM-GB98 Certification Cost 2026: Complete Pricing Breakdown. Once you've registered, remember that examination eligibility lasts six months from approval, and a passing score is only valid for one year, so timing your study plan against these windows matters as much as content mastery. Our NM-GB98 Exam Dates 2026: Testing Windows, Deadlines & Scheduling article maps out how those clocks interact.

Part 1 Domains: GB-2 Residential Building Contractor

Part 1 consists of 80 questions across eight content domains. Understanding the exact weighting helps you allocate study hours instead of spreading effort evenly across topics you may already know well.

Domains 2 (Concrete and Concrete Reinforcement), 3 (Masonry), 5 (Roofing), 6 (Associated Trades), and 8 (OSHA Safety) round out Part 1 with 9, 6, 10, 12, and 8 questions respectively. For a question-by-question breakdown of all 17 domains across both parts, our companion piece NM-GB98 Exam Domains 2026: Complete Guide to All 17 Content Areas is the deeper resource to pair with this study guide.

Part 2 Domains: GB-98 General Building Contractor

Part 2 is longer and broader - 100 questions over 310 minutes, spanning nine domains that shift emphasis toward commercial-scale building systems.

Domain 16 stands out immediately: at 27 of 100 questions, General Code, Plan Reading, and Estimating is nearly triple the size of the next-largest Part 2 domain. Any candidate who underprepares here is taking on outsized risk against the 75% passing threshold. Domain 10, Concrete and Concrete Reinforcement, is the second-heaviest at 15 questions, followed by Domains 9, 11, 13, and 15 each carrying 10.

If you're trying to gauge how tough this two-part structure really is relative to other state contractor exams, read How Hard Is the NM-GB98 Exam? Complete Difficulty Guide 2026, and check NM-GB98 Pass Rate 2026: What the Data Shows for context on outcomes.

The Business and Law Requirement

New contractor candidates must satisfy a Business and Law requirement separate from the technical exam, either by passing the PSI Business and Law examination or by completing an approved course. The exam itself is 50 questions over 130 minutes, open book, and also requires a 75% score to pass. At $68.88, it's a smaller line item than the combination technical exam, but it's not optional for first-time qualifying-party applicants.

Because this exam is scheduled and scored independently from GB-2 and GB-98, treat it as its own study block rather than an afterthought squeezed in the week before your technical test date. Our NM-GB98 Requirements 2026: Eligibility, Prerequisites & How to Qualify article details how Business and Law fits into the overall eligibility picture, including the four-year, 8,000-hour qualifying experience rule and the half-time credit available for approved education or training.

Open-Book References: What You Can and Cannot Bring

All three exams - GB-2 Part 1, GB-98 Part 2, and Business and Law - are open book. That's a significant advantage, but only if you prepare your references correctly before test day. Approved materials include the listed 2021 New Mexico building codes, the 2021 IRC or IBC as applicable to the question, and standard trade texts.

• References must be bound - loose papers are not permitted
• You may highlight, underline, index, and permanently tab your books in advance
• You may not add handwritten notes or annotations beyond tabs and highlighting
• A silent, nonprinting, nonprogrammable calculator is allowed

For a fast-reference summary of what to tab and where, our NM-GB98 Cheat Sheet 2026: One-Page Review of Must-Know Facts condenses the highest-value lookups by domain.

A Domain-Weighted Study Timeline

Rather than studying every domain equally, allocate time proportional to question count and personal weak spots. Here's a sample structure built around the actual domain weights above.

This kind of week-by-week structure is a study methodology, not a substitute for content mastery - pair it with focused practice questions on ../ to test recall under exam-like time pressure before you commit to a PSI appointment.

If You Need a Retake

Because GB-2 and GB-98 are scored separately even within a single combination registration, it's possible to pass one part and not the other. In that case, the one-part retake fee is $134.53 rather than the full $269.06 combination cost. Passing scores remain valid for one year, giving you room to schedule the retake without redoing an already-passed part. If your goal is understanding exactly what score you need going into either attempt, NM-GB98 Passing Score 2026: Exactly What You Need to Pass breaks down the 75% threshold across all three exams (GB-2, GB-98 Part 2, and Business and Law).

Who Hires GB-98 Licensed Contractors

A New Mexico General Building license qualifies you to bid and contract on a wide range of residential and commercial building work spanning the domains tested - sitework, concrete, masonry, carpentry, metals, and roofing systems. Licensed qualifying parties commonly work for general contracting firms, run their own construction businesses, or serve as the qualifying party for a company bidding public and private building projects across the state. Since General Building renewal carries no continuing education requirement, the credential represents a durable, one-time qualification investment rather than an ongoing compliance burden.

If you're weighing whether pursuing this license is worth the time and testing cost relative to your career goals, Is the NM-GB98 Certification Worth It? Complete ROI Analysis 2026 and NM-GB98 Salary Guide 2026: Complete Earnings Analysis go deeper into the career-outcome side, while NM-GB98 Jobs looks at where licensed contractors find work. And once you're licensed, browsing ../ for continued practice can help you stay sharp before bidding on your first larger project.

Frequently Asked Questions