- What AZ-B1 Actually Means
- Who Governs the Exam and Why It Matters
- Exam Format, Timing, and Scoring
- The 10 Content Domains Behind the Name
- Approved References and Tools
- Registration, Fees, and Eligibility
- Who Actually Needs AZ-B1
- Mapping Study Time to the AZ-B1 Outline
- What Happens After You Pass
- Frequently Asked Questions
- AZ-B1 is the Arizona Registrar of Contractors' B-1 General Commercial trade exam, administered by PSI.
- The exam has 100 scored questions, a 4-hour limit, and requires a 70% passing score.
- Concrete (14%) and Metals (13%) are the two heaviest-weighted domains out of ten total.
- The trade-exam fee is $66, while total application and initial license fees run $780.
What AZ-B1 Actually Means
AZ-B1 refers specifically to the Arizona B-1 General Commercial Contractor Trade Examination - the licensing test that qualifying parties must pass to hold a B-1 classification with the Arizona Registrar of Contractors (ROC). It is not a national certification, a safety credential, or a designation tied to any other industry. In Arizona's licensing structure, "B-1" identifies the general commercial classification, and the trade exam is the technical, content-based portion of qualifying for that license.
If you've searched other resources and found different fee schedules, pass rates, or governing bodies attached to "AZ-B1," those details belong to unrelated credentials that happen to share the same letters and numbers. Everything on this site, and in this article, is scoped to the Arizona construction trade exam only. For a broader walkthrough of the credential itself, see What Is AZ-B1? and AZ-B1 Meaning.
Who Governs the Exam and Why It Matters
The Arizona Registrar of Contractors sets licensing policy, but the actual delivery of the trade exam is handled by PSI, a third-party testing vendor. PSI administers a combined bulletin that covers B-1, B-2, KB-1, and KB-2 classifications, meaning the content outline and testing rules you'll encounter apply across several related residential and commercial classifications - not just B-1 alone. Knowing this matters because it explains why some study materials reference multiple classification codes even though your target is specifically the general commercial B-1 exam.
The current PSI candidate bulletin is dated February 18, 2026, and the B-1 content outline took effect May 9, 2024. Anyone comparing outdated PDFs or forum posts should check these dates first, since domain weighting or reference materials can change between bulletin revisions.
Exam Format, Timing, and Scoring
The AZ-B1 trade exam is a computer-delivered, open-book, multiple-choice test. Here's what that structure looks like in practice:
- 100 scored questions, plus PSI may insert 5 to 10 unscored experimental questions that are indistinguishable from scored ones.
- 4-hour time limit to complete the full exam.
- 70% passing score required on the scored portion.
- Open-book format, meaning you're allowed to bring approved printed references into the exam room.
- Delivery options include in-person test centers or remote-proctored testing, giving candidates flexibility in how they sit for the exam.
Because the exam is open-book but still time-pressured across 100 questions in four hours, familiarity with your reference material's structure matters as much as memorized knowledge. For a full breakdown of how the score itself is calculated and what a passing result requires, read AZ-B1 Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Being "open-book" does not mean easy - with 100 questions in 4 hours, you have roughly two minutes per question, so you need to know where information lives in your references before test day, not during it.
The 10 Content Domains Behind the Name
What actually defines AZ-B1 as a credential is its content outline - the ten domains PSI uses to build the exam. Each question you see maps back to one of these areas:
Domain 1: Sitework
Covers excavation, grading, and site preparation tasks that precede structural construction.
Domain 2: Concrete (14% - largest domain)
The single heaviest-weighted domain on the exam, covering formwork, reinforcement, placement, and curing concepts.
- Expect this domain to generate the most questions on your exam form
Domain 3: Masonry
Focuses on masonry materials, installation methods, and related structural considerations.
Domain 4: Metals (13% - second largest)
Covers structural and miscellaneous metal work, second only to Concrete in weight.
Domain 5: Carpentry
Rough and finish carpentry principles relevant to commercial construction.
Domain 6: Thermal and Moisture Protection
Waterproofing, insulation, and related envelope protection topics.
Domain 7: Doors and Windows
Installation and specification concepts for openings in commercial structures.
Domain 8: Finishes
Interior and exterior finish work applicable to commercial projects.
Domain 9: Safety
Jobsite safety principles, closely tied to the OSHA reference allowed in the exam room.
Domain 10: General Building Code
Draws directly from the International Building Code, tying code knowledge across all other domains together.
Because Concrete and Metals together represent 27% of the scored content, candidates who under-study these two domains put a disproportionate share of the exam at risk. A domain-by-domain breakdown with study priorities for all ten areas is available in AZ-B1 Exam Domains 2026: Complete Guide to All 10 Content Areas.
Approved References and Tools
Because the exam is open-book, the value of AZ-B1 as a credential is tied directly to how well a candidate can navigate specific published references under time pressure. The approved materials are:
- OSHA 29 CFR Part 1926 - the federal construction safety standard, directly relevant to the Safety domain.
- 2018 International Building Code (IBC) - the primary code reference, tied heavily to the General Building Code domain.
- 2018 International Residential Code (IRC) - relevant to overlapping residential-scope questions.
A basic silent, nonprinting, nonprogrammable calculator is also permitted at test centers. No other materials, notes, or electronic devices are allowed. Because these are the only tools in the room, candidates typically tab, highlight, and index their code books in advance rather than trying to read them cover-to-cover for the first time during the exam.
Registration, Fees, and Eligibility
Understanding what AZ-B1 means also requires understanding the path to sit for it. The trade exam itself carries a $66 fee, but that's only one piece of the total licensing cost. General Commercial application and initial license fees total $780, with a two-year renewal fee of $580. A full breakdown of every fee involved, including how the $66 exam charge fits into the larger total, is covered in AZ-B1 Certification Cost 2026: Complete Pricing Breakdown.
| Item | Cost |
|---|---|
| Trade exam fee | $66 |
| General Commercial application + initial license | $780 |
| Two-year renewal | $580 |
On the eligibility side, a qualifying party generally needs four years of practical or management trade experience, with at least two years within the preceding ten years. Approved technical education can substitute for up to two of those years. Beyond experience, applicants must also complete the Arizona Statutes and Rules Training Course and Exam, pass a background check, secure a bond, and complete the ROC application process. Full eligibility mechanics are detailed in AZ-B1 Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Notably, applicants may substitute the NASCLA Accredited Commercial General Building exam in place of the Arizona-specific trade exam, which can be useful for contractors already holding that credential. Whichever exam path you take, passing results must be used for the license application within two years, so timing your license application after passing matters.
Who Actually Needs AZ-B1
The B-1 classification is aimed at general commercial contractors - those overseeing or performing work across multiple trades on commercial construction projects rather than a single specialty. Qualifying parties for construction companies, project managers moving into a licensed role, and tradespeople expanding from specialty licenses into general commercial work are the typical candidates. Because the exam draws from ten distinct domains rather than one narrow specialty, it's designed to test breadth across a commercial jobsite: sitework and concrete through finishes and code compliance.
If you're weighing whether pursuing this license fits your career plans, Is the AZ-B1 Certification Worth It? Complete ROI Analysis 2026 and AZ-B1 Jobs go deeper into how the license is used in the field.
Mapping Study Time to the AZ-B1 Outline
Rather than studying generically, effective AZ-B1 preparation follows the domain weighting. Since Concrete (14%) and Metals (13%) together make up more than a quarter of the scored questions, they deserve proportionally more review time than lower-weighted domains like Doors and Windows or Finishes.
Concrete and Metals
- Work through IBC sections relevant to concrete formwork and structural metals
- Practice questions targeting these two highest-weighted domains first
Sitework, Masonry, and Carpentry
- Review excavation and grading principles under Sitework
- Cross-reference masonry and carpentry sections against the IRC
Safety, Code, and Building Envelope
- Index OSHA 29 CFR Part 1926 for quick lookup on Safety domain questions
- Study Thermal and Moisture Protection and General Building Code together, since both lean on code references
Full Timed Practice
- Simulate the 4-hour, 100-question format under real time pressure
- Rotate through remaining domains: Doors and Windows, Finishes
This kind of proportional review is exactly what's covered in more depth in the AZ-B1 Study Guide 2026: How to Pass on Your First Attempt, and if you're unsure how demanding the exam feels relative to other licensing tests, How Hard Is the AZ-B1 Exam? Complete Difficulty Guide 2026 walks through that in detail. You can also review AZ-B1 Pass Rate 2026: What the Data Shows for context on how candidates typically perform.
What Happens After You Pass
Passing the trade exam is only one requirement toward holding a B-1 license. You still need to finalize the Arizona Statutes and Rules Training Course and Exam, submit to a background check, secure your bond, and complete the ROC application - all within the two-year window your exam results remain valid. Missing that window means retaking the trade exam before your license application can move forward.
Once licensed, renewal happens on a two-year cycle at the $580 fee mentioned earlier. For candidates planning their exam date around other commitments, AZ-B1 Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers how PSI's test-center and remote-proctored scheduling works in practice. And if you want a condensed, one-page reference of the facts covered here - fees, domain weights, and format - AZ-B1 Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for exactly that.
For readers who arrived here searching variations of this question, related explainers are also available: What Does AZ-B1 Stand For?, What Is A AZ-B1?, What Is AZ-B1 Certification?, and AZ-B1 Certification. If you're building a preparation plan rather than just researching terminology, AZ-B1 Training and our full practice test library are good next stops.
Frequently Asked Questions
No. AZ-B1 is specifically the Arizona B-1 General Commercial Contractor Trade Examination, governed by the Arizona Registrar of Contractors and administered by PSI. It is not interchangeable with other credentials that share similar naming.
The exam includes 100 scored questions with a 4-hour time limit. PSI may also include 5 to 10 unscored experimental questions mixed in, which you cannot identify during the test.
You need a 70% passing score on the scored questions. The experimental questions are not counted toward this score.
Only the approved references are allowed: OSHA 29 CFR Part 1926, the 2018 International Building Code, and the 2018 International Residential Code, along with a basic silent, nonprinting, nonprogrammable calculator.
Yes. B-1 applicants may substitute the NASCLA Accredited Commercial General Building exam in place of the Arizona trade exam, provided they meet the other licensing requirements.