- The scored outline has 100 questions in 240 minutes with a 70% passing standard.
- Concrete (14 items) and Metals (13 items) carry the heaviest domain weight - study these first.
- PSI may add 5-10 unscored experimental questions, so your screen count can exceed 100.
- Only the 2018 IBC, 2018 IRC, and OSHA 29 CFR 1926 are allowed as restricted references.
Understanding the AZ-B2 Exam
The AZ-B2 exam is the Arizona Registrar of Contractors (ROC) trade examination for the General Small Commercial Contractor classification, administered through PSI testing centers or remote proctoring. It's easy to confuse B-2 with residential classifications, but B-2 is strictly commercial: it qualifies contractors to build new commercial structures or additions where total labor and materials come to $2,000,000 or less. If you're unsure whether this is the right track for your license, the overview at What Is AZ-B2? lays out the classification in plain terms.
B-2 shares its trade-exam blueprint with the B-1, KB-1, and KB-2 classifications, which is why the outline you'll study covers general commercial building knowledge rather than a single trade specialty. Electrical, plumbing, fire protection, air conditioning, boiler, swimming pool, spa, and water-well work fall outside B-2's scope and must be subcontracted to appropriately licensed contractors - a point the exam expects you to know cold, not just as a licensing footnote.
Exam Format, Fees, and Registration Mechanics
Knowing the mechanics before test day removes a huge source of anxiety. The scored AZ-B2 outline consists of 100 questions delivered over 240 minutes, with a 70% passing standard. PSI may insert 5-10 additional unscored experimental questions somewhere in the session, so don't panic if your on-screen question count doesn't land at exactly 100 - that's expected behavior, not a sign you're on the wrong exam. For a deeper look at how the score itself is calculated, see AZ-B2 Passing Score 2026: Exactly What You Need to Pass.
Registration and testing are handled through PSI, either at a physical test center or via remote proctoring. One trade-examination attempt costs $66. That's separate from the online ROC Statutes and Rules Exam (SRE), which costs $61 and covers Arizona contracting law rather than trade content. Both must be completed before you submit your license application. If you want a full cost picture including bonding and application fees, AZ-B2 Certification Cost 2026: Complete Pricing Breakdown walks through the entire spend.
Key Takeaway
Budget for two separate exams - the $66 PSI trade exam and the $61 online SRE - and plan your study time for each independently since they test different bodies of knowledge.
The trade outline currently in effect is dated May 9, 2024, and the general Arizona PSI bulletin carries a February 18, 2026 revision date. Always confirm you're studying against the current bulletin before you schedule; testing policies get refreshed and an outdated printout can cost you an exam fee. For scheduling windows and how far in advance to register, check AZ-B2 Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
The 10 Scored Domains, Ranked
AZ-B2 questions are drawn from ten official subject areas, each with a fixed item count. Studying blind - treating every topic as equally important - is the single biggest mistake candidates make. Here's the actual weighting:
| Domain | Item Count |
|---|---|
| Concrete | 14 |
| Metals | 13 |
| Carpentry | 12 |
| Safety | 12 |
| Masonry | 10 |
| Thermal and Moisture Protection | 10 |
| Sitework | 9 |
| General Building Code | 9 |
| Finishes | 6 |
| Doors and Windows | 5 |
Concrete is the largest domain, followed closely by Metals - together they account for roughly a quarter of the scored exam. That alone should reorder your priority list. For a full breakdown of every topic tested inside each of these ten areas, the companion resource AZ-B2 Exam Domains 2026: Complete Guide to All 10 Content Areas goes domain by domain in detail.
Concrete (14 items)
As the largest domain, Concrete deserves the most study hours. Expect questions on formwork, reinforcement placement, curing conditions, slab-on-grade practices, and mix considerations relevant to small commercial structures.
- Formwork design and stripping timing
- Reinforcement placement and coverage requirements
- Curing methods and joint placement
Metals (13 items)
Metals is the second-largest domain and often underestimated by candidates who assume it's a niche topic. It covers structural steel, connections, and metal framing common in commercial builds.
- Structural steel erection sequencing and bracing
- Bolted and welded connection basics
- Cold-formed metal framing applications
Safety (12 items)
Safety ties for third-largest and draws heavily from OSHA 29 CFR 1926 - one of the three references you're allowed to bring into the exam room. Fall protection, excavation safety, and scaffolding requirements are recurring themes.
- Fall protection thresholds and systems
- Excavation and trenching protective systems
- Scaffold access and load requirements
What You Can (and Can't) Bring Into the Testing Room
AZ-B2 uses restricted-reference, open-book testing, which changes how you should prepare compared to a closed-book exam. You're permitted to use the 2018 International Building Code, the 2018 International Residential Code, and OSHA 29 CFR Part 1926 during the exam. Any other listed study-only book is not permitted inside the testing room, even if it's part of your general prep materials.
Pre-existing highlighting, underlining, annotations, and permanent tabs in those approved references are allowed under this outline - so tab your code books methodically well before test day. What's prohibited is bringing additional loose or attached papers, or writing in the books during the test itself. If you're testing remotely, know that physical scratch paper and breaks are not permitted in that format, which is a meaningful difference from in-center testing.
Key Takeaway
Build your tab system in the 2018 IBC, 2018 IRC, and OSHA 1926 now - during the exam you can navigate a well-tabbed code book far faster than you can search from memory.
A basic silent, nonprinting, non-programmable, non-scientific calculator is allowed. Don't show up with a graphing or scientific model - it's not permitted, and you don't want to discover that at check-in. For candidates weighing how demanding this open-book format really is in practice, How Hard Is the AZ-B2 Exam? Complete Difficulty Guide 2026 addresses that question directly.
Eligibility, the SRE, and Application Timing
Before you can even schedule the trade exam productively, confirm you meet the qualifying-party experience threshold. Arizona generally requires four years of relevant practical or management experience, with at least two of those years falling within the preceding ten. Approved technical training or education can offset part of that requirement, but the credit is capped at two years - it can't fully substitute for hands-on experience.
You must complete the applicable SRE and trade exam requirements before submitting your license application, and you need to apply within two years of passing the trade exam. Beyond the exams themselves, licensing requires the appropriate contractor bond, business-entity standing, background checks, and legally required workers' compensation coverage. None of these are exam-day topics, but missing one can stall a license application even after you've passed both tests. The full eligibility checklist is covered in AZ-B2 Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Building a Domain-Weighted Study Timeline
Generic study advice - spaced repetition, timed practice blocks, active recall - works, but only if it's mapped to the actual weight of AZ-B2's ten domains. Don't spend equal time on Doors and Windows (5 items) as you do on Concrete (14 items). Below is a sample allocation you can adapt to your own schedule.
Concrete and Metals
- Work through formwork, reinforcement, and curing scenarios
- Review structural steel connections and cold-formed framing
- Take domain-specific practice questions on our practice test platform
Carpentry and Safety
- Study framing sequences and rough-to-finish carpentry standards
- Cross-reference OSHA 29 CFR 1926 fall protection and excavation rules
- Practice navigating your tabbed reference books under a timer
Masonry, Thermal/Moisture, and Building Code
- Review masonry unit placement and reinforcement
- Study waterproofing, insulation, and roofing assemblies
- Work General Building Code questions against the 2018 IBC
Sitework, Finishes, Doors/Windows, and Full Review
- Cover the remaining smaller domains in focused sessions
- Run full-length timed practice exams under near test-day conditions
- Revisit your weakest domains identified through practice scoring
Use the AZ-B2 Cheat Sheet 2026: One-Page Review of Must-Know Facts during your final review week as a rapid-fire check across all ten domains rather than a primary study tool.
Retake Rules If You Don't Pass the First Time
If you don't clear the 70% passing standard on your first attempt, you must wait 30 days before retesting. That waiting period stretches to 90 days once you reach a fourth or subsequent attempt, so repeated unfocused retakes get progressively more expensive and time-consuming. This is exactly why a domain-weighted study plan matters more than cramming generic contractor trivia - every retake also means another $66 PSI fee.
Once licensed, remember that AZ-B2 credentials operate on a biennial renewal framework requiring a renewal application, applicable fee, and a valid bond - the exam itself is a one-time hurdle, but license maintenance is ongoing. For context on how this credential fits into a broader career and licensing decision, Is the AZ-B2 Certification Worth It? Complete ROI Analysis 2026 is worth a read before you commit fully to the process. And if you want to gauge how other candidates have fared, AZ-B2 Pass Rate 2026: What the Data Shows lays out what's publicly known.
FAQ
The scored outline contains 100 questions, but PSI may add 5-10 unscored experimental questions within the same 240-minute session, so your total on-screen count can be slightly higher.
Only the 2018 International Building Code, the 2018 International Residential Code, and OSHA 29 CFR Part 1926 are permitted as restricted references. Other study-only books are not allowed in the testing room.
Concrete, with 14 scored items, is the largest domain, followed by Metals at 13 items. Prioritize these two before moving to smaller domains like Doors and Windows.
One PSI trade-examination attempt costs $66. The separate online ROC Statutes and Rules Exam (SRE) costs $61 and must also be completed before applying for licensure.
You must wait 30 days before retesting. If you reach a fourth or later attempt, the required wait extends to 90 days before you can test again.