What Does NM-GB98 Mean?

What NM-GB98 Actually Means

NM-GB98 refers specifically to the New Mexico General Building Contractor Part 2 examination administered as part of the state's GB-98 combination technical exam. It is not a generic acronym and it is not shared with unrelated industries - in New Mexico's licensing framework, GB-98 is the code assigned to the general building classification, and the exam bearing that number is the second, larger portion of the technical testing required to qualify as a general building contractor.

When people search "what does NM-GB98 mean," they are usually trying to confirm whether it is a license, a certification, or a test. The clearest answer: it is an examination that, when passed together with its companion exam, satisfies the technical competency requirement for a New Mexico general building contractor license. For a broader overview of the credential itself, see NM-GB98 Certification or the plain-language breakdown in What Is NM-GB98?

Who Regulates the Credential

The exam is regulated by the New Mexico Regulation and Licensing Department, Construction Industries Division (CID). Examination approval and delivery run through PSI, which administers the test on computer at authorized testing centers. PSI maintains a contractor candidate bulletin that governs scheduling, references, and testing-day rules; the version referenced for this article was updated April 3, 2026, so candidates should always check for the latest bulletin before registering.

Because CID sets the licensing rules and PSI handles delivery, two separate systems affect your path: CID eligibility approval (experience, application, fees) and PSI scheduling (exam dates, testing center logistics, reference rules). Understanding both is covered in more depth in NM-GB98 Requirements 2026: Eligibility, Prerequisites & How to Qualify.

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

The full "GB-98 combination technical exam" is actually two exams taken together:

• GB-2 Residential Building Contractor - Part 1: 80 questions, 225 minutes.
• GB-98 General Building Contractor - Part 2: 100 questions, 310 minutes.

Both parts are open book and each requires a score of at least 75% to pass independently. This structure means Part 2 (the actual GB-98 portion) is longer and carries more questions than Part 1, reflecting its broader coverage of general building topics layered on top of residential fundamentals. If you fail only one part, you don't have to retake both - a one-part retake costs $134.53, versus the $269.06 combination fee for a first attempt.

For a deeper dive into what "passing" actually requires numerically, read NM-GB98 Passing Score 2026: Exactly What You Need to Pass, and for scheduling specifics see NM-GB98 Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

The 17 Domains Behind the Two Parts

Between GB-2 Part 1 and GB-98 Part 2, the exam blueprint is broken into 17 content domains. Part 1 domains skew toward residential-scale fundamentals, while Part 2 domains - the ones directly under the GB-98 name - go deeper into concrete, masonry, metals, and code/plan-reading complexity at a higher question count.

Part 1 Domains (GB-2)

Other Part 1 domains include Concrete and Concrete Reinforcement (9 questions), Masonry (6 questions), Roofing (10 questions), Associated Trades (12 questions), and OSHA Safety (8 questions).

Part 2 Domains (GB-98)

Rounding out Part 2: Sitework, Footings, and Foundations (10 questions), Masonry (10 questions), Carpentry (6 questions), Roofing (6 questions), Associated Trades (10 questions), and OSHA Safety (6 questions).

For the complete breakdown of every domain with study emphasis, see NM-GB98 Exam Domains 2026: Complete Guide to All 17 Content Areas.

Business and Law: The Other Requirement

Beyond the technical exam, new contractor candidates must also satisfy a Business and Law requirement, either by passing the PSI Business and Law examination or by completing an approved course. The PSI Business and Law exam has 50 questions, allows 130 minutes, is open book, and requires 75% to pass. It costs $68.88 and is scored and administered separately from the GB-2/GB-98 combination technical exam.

This means a first-time applicant is generally managing three separate exam components - GB-2, GB-98, and Business and Law - each with its own fee, time limit, and 75% threshold. Understanding all of the fees together, rather than in isolation, is important for budgeting; a full breakdown is in NM-GB98 Certification Cost 2026: Complete Pricing Breakdown.

Eligibility and Experience Rules

To sit for the exam, candidates must document four years and 8,000 hours of qualifying experience within the preceding ten years. Approved education or training can offset part of this requirement - it may receive half-time credit for up to one-half of the total hours needed, but it cannot replace the entire experience requirement on its own.

Once approved, examination eligibility is valid for six months, and any passing score you earn remains valid for one year. There is also a qualifying-party application and work-affidavit fee of $36 tied to establishing yourself as the license's qualifying individual. General Building renewal itself carries no continuing education requirement, which is worth knowing when planning long-term after you're licensed.

Full eligibility mechanics, including how experience is documented, are covered in NM-GB98 Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Open-Book References and What You Can Bring

Both technical parts and the Business and Law exam are open book, but "open book" comes with strict rules. Approved references include the listed 2021 New Mexico building codes, the 2021 IRC or IBC as applicable, and approved trade texts. References must be bound, and while you may highlight, underline, index, and permanently tab them before test day, you may not bring loose papers or handwritten notes tucked inside. A silent, nonprinting, nonprogrammable calculator is permitted.

This reference policy changes how you should study. Since you won't need to memorize every code section verbatim, your time is better spent learning where information lives in your references and how quickly you can locate it under time pressure - particularly for Domain 16 (General Code, Plan Reading, and Estimating), which alone accounts for 27 of the 100 Part 2 questions.

Fees and Timelines

Here's how the core fees break down for a first-time GB-98 candidate:

• GB-98 combination technical exam (GB-2 + GB-98): $269.06
• One-part retake: $134.53
• PSI Business and Law exam: $68.88
• Qualifying-party application and work-affidavit fee: $36

These figures reflect the technical and administrative fees only; they don't account for study materials, reference documents, or any course fees if you choose the Business and Law course route instead of the exam. A more granular cost analysis, including how retakes affect total spend, is available in NM-GB98 Certification Cost 2026: Complete Pricing Breakdown.

Who Uses the GB-98 Designation

The general building classification exists for contractors whose work spans multiple trades on a single project - sitework, concrete, masonry, carpentry, roofing, and metals - rather than a single specialty license. Holding a GB-98-qualified license typically opens the door to bidding and overseeing larger, mixed-scope building projects that a narrower residential-only classification would not cover.

Because the exam blueprint reflects real jobsite responsibilities - reading commercial plans, estimating multi-trade projects, coordinating concrete and metal work - passing it signals to employers and clients that a contractor can manage complexity beyond single-trade residential work. If you're evaluating whether this path fits your career goals, Is the NM-GB98 Certification Worth It? Complete ROI Analysis 2026 and NM-GB98 Salary Guide 2026: Complete Earnings Analysis walk through the practical trade-offs, while NM-GB98 Jobs looks at where the classification tends to matter most in hiring.

Mapping a Study Plan to the Blueprint

Given that Domain 16 (27 questions) and Domain 10 (15 questions) dominate Part 2's question count, an efficient study plan weights time toward those areas first, then works backward through the smaller domains like Metals (10 questions) and OSHA Safety (6 questions).

For a complete week-by-week methodology built specifically around this blueprint, see NM-GB98 Study Guide 2026: How to Pass on Your First Attempt, and to gauge realistic difficulty expectations, check How Hard Is the NM-GB98 Exam? Complete Difficulty Guide 2026. Practicing with realistic scenario questions on our practice test platform can help you get comfortable with the pacing before test day.

If you want a condensed reference for last-minute review across all these fees, domains, and rules, bookmark NM-GB98 Cheat Sheet 2026: One-Page Review of Must-Know Facts. And if you're still deciding whether the underlying pass/fail data supports your timeline, NM-GB98 Pass Rate 2026: What the Data Shows lays out what's publicly known.

Frequently Asked Questions