- The trade exam has 100 scored questions, a 4-hour limit, and requires a 70% passing score.
- Concrete (14%) and Metals (13%) are the two heaviest domains - study them first.
- You may bring OSHA 29 CFR Part 1926, the 2018 IBC, and the 2018 IRC into the test center.
- The trade-exam fee is $66, and exam results must be applied toward licensure within two years.
What the AZ-B1 Trade Exam Actually Tests
The Arizona B-1 General Commercial Contractor Trade Examination is administered by PSI on behalf of the Arizona Registrar of Contractors as part of a combined B-1/B-2/KB-1/KB-2 trade exam. It's a computer-delivered, open-book, multiple-choice exam built around real commercial construction scenarios - not abstract theory. The current PSI candidate bulletin (dated February 18, 2026) and the B-1 content outline effective May 9, 2024 govern exactly what's fair game on test day.
Candidates get 100 scored questions and a 4-hour window, with PSI reserving the right to slip in 5 to 10 unscored experimental questions that look identical to the real thing. You won't know which items are experimental, so treat every question as if it counts. If you're still asking yourself what this credential even represents, our overview on What Is AZ-B1? and the deeper breakdown at AZ-B1 Certification are good starting points before you dive into content review.
Registration, Fees, and Exam-Day Mechanics
Before you can sit for the exam, a qualifying party generally needs four years of practical or management trade experience, with at least two of those years falling within the preceding ten years. Approved technical education can offset up to two years of that requirement. You'll also need to complete the Arizona Statutes and Rules Training Course and Exam, pass a background check, secure a bond, and finish the application steps - all of which are detailed in our full AZ-B1 Requirements guide.
On the financial side, the trade-exam fee itself is $66, but that's only one line item. General Commercial application and initial license fees total $780, and renewal every two years runs $580. If you're trying to build a realistic budget before you commit, read the itemized breakdown in AZ-B1 Certification Cost 2026.
Once you pass, don't sit on the result - exam results must be used toward the license application within two years, or you'll need to retest. Also worth knowing: applicants can substitute the NASCLA Accredited Commercial General Building exam in place of the Arizona trade exam, which is worth exploring if you already hold that credential or work across multiple states.
Key Takeaway
Confirm your qualifying experience and paperwork status before you schedule - the exam fee is small compared to the cost of a wasted attempt or a lapsed two-year eligibility window.
Which Domains Deserve Your Study Hours
The B-1 content outline spans ten domains, and they are not weighted equally. Understanding the relative weight of each domain is the single biggest lever you have for efficient studying - spend hours on low-yield topics and you'll run out of time before covering what actually shows up most often. For the full domain-by-domain breakdown, see AZ-B1 Exam Domains 2026.
Domain 2: Concrete (Largest Domain - 14%)
Concrete is the single heaviest domain on the trade exam. Candidates need working knowledge of mix design basics, formwork, reinforcement placement, curing, and jointing as they relate to commercial slab and structural applications.
- Expect scenario questions tying concrete practice back to IBC structural provisions
Domain 4: Metals (Second Largest - 13%)
Metals covers structural steel, connections, fasteners, and metal framing systems used in commercial builds. Because it's the second-heaviest domain, treat it with nearly the same priority as concrete.
- Review load paths and connection details that a general contractor must verify on-site
Remaining Domains
Sitework, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, Finishes, Safety, and General Building Code round out the outline. Each carries less weight individually than Concrete or Metals, but together they represent the majority of the exam, so none can be skipped.
- Safety questions frequently reference OSHA 29 CFR Part 1926 directly
- General Building Code questions draw from the 2018 IBC and 2018 IRC
If you're wondering whether this exam is genuinely tough or just unfamiliar in format, our analysis in How Hard Is the AZ-B1 Exam? unpacks the difficulty honestly, and AZ-B1 Pass Rate 2026 looks at what the available data actually shows.
Mastering Your Open-Book References
One of the most distinctive features of this exam is that it's open-book - but only with the specific references PSI allows into the test center: OSHA 29 CFR Part 1926, the 2018 International Building Code, and the 2018 International Residential Code. A basic silent, nonprinting, nonprogrammable calculator is also permitted.
Open-book does not mean easy. With a 4-hour limit and 100 scored questions, you don't have time to look up every answer from scratch. The candidates who pass efficiently use their references to confirm specific code sections or OSHA thresholds they've already studied - not to learn the material for the first time mid-exam. Practice navigating the table of contents and index of each reference until you can locate a section in under 30 seconds.
Whichever delivery option you choose - a PSI test center or remote-proctored testing from home - the reference rules stay the same. Remote testing adds convenience but also adds setup requirements (clean workspace, no unauthorized materials), so review PSI's current bulletin before exam day and check AZ-B1 Exam Dates 2026 for scheduling windows and deadlines.
A Domain-Weighted Study Timeline
A generic study calendar won't help you here - your schedule should mirror the exam's own domain weighting. Below is a sample allocation built around Concrete and Metals carrying the heaviest load, with remaining weeks distributed across the other eight domains and a final review pass.
Concrete (Domain 2)
- Work through mix design, reinforcement, and formwork scenario questions
- Cross-reference relevant 2018 IBC structural sections
Metals (Domain 4)
- Study structural steel connections and metal framing systems
- Practice locating relevant code sections quickly under timed conditions
Sitework, Masonry, and Carpentry
- Cover excavation, foundation, and framing fundamentals
- Build familiarity with IRC provisions for residential-adjacent commercial work
Thermal/Moisture, Doors/Windows, Finishes
- Review envelope systems, waterproofing, and finish schedules
- Practice mixed-domain question sets to simulate exam pacing
Safety and General Building Code
- Drill OSHA 29 CFR Part 1926 requirements relevant to commercial jobsites
- Reinforce IBC/IRC administrative and general provisions
Full Review and Timed Practice
- Run full-length timed practice sessions under the 4-hour limit
- Retest weak domains, focusing extra time back on Concrete and Metals
For a condensed, one-page version of everything above to review the night before your exam, bookmark the AZ-B1 Cheat Sheet 2026. And if you want to gauge readiness against real exam conditions, running full practice sets on our AZ-B1 practice test platform is the fastest way to find your weak domains before test day.
| Domain | Relative Weight | Study Priority |
|---|---|---|
| Concrete | 14% (largest) | Highest |
| Metals | 13% | High |
| Remaining 8 Domains | Combined majority of exam | Even coverage, no skipping |
Who Actually Hires B-1 License Holders
The B-1 license qualifies holders to act as a general commercial contractor in Arizona, which opens doors with commercial general contracting firms, design-build outfits, and construction management companies bidding on office, retail, industrial, and multi-family projects. Because the exam draws so heavily from Concrete, Metals, and General Building Code, employers value candidates who can speak fluently about structural systems and code compliance - not just swing a hammer.
If you're weighing whether pursuing this license makes financial sense for your career stage, Is the AZ-B1 Certification Worth It? walks through the return-on-investment considerations, and AZ-B1 Salary Guide 2026 covers earnings context. For active listings and role expectations, AZ-B1 Jobs is a useful companion read once you're licensed.
Mistakes That Sink First-Time Candidates
- Treating "open-book" as a safety net. With only 4 hours for 100 questions, candidates who haven't pre-studied Concrete and Metals content run out of time flipping through the 2018 IBC and IRC looking for answers they should already know.
- Ignoring Safety until the last minute. OSHA 29 CFR Part 1926 questions are specific and detail-oriented; cramming this domain the night before rarely works.
- Letting the two-year result window lapse. Passing the exam doesn't lock in a license - you must complete the application within two years of your result.
- Skipping smaller domains because they're not the largest. No single domain dominates the exam; Concrete and Metals lead, but the other eight domains still make up most of the scored questions.
- Not practicing under real time pressure. A 70% passing score sounds achievable until you're managing a 4-hour clock across ten different content areas simultaneously.
Running realistic, timed practice sessions on AZ-B1 Exam Prep's practice platform before your official exam date helps surface these gaps while you still have time to fix them, and cross-checking your target score against AZ-B1 Passing Score 2026 keeps your prep grounded in the actual scoring standard rather than guesswork.
Frequently Asked Questions
The exam has 100 scored questions with a 4-hour time limit. PSI may also include 5 to 10 unscored experimental questions that are indistinguishable from scored ones.
You need a 70% passing score on the scored portion of the exam. See AZ-B1 Passing Score 2026 for a full breakdown of what that means in raw question terms.
Approved exam-room references are 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. PSI offers both test-center and remote-proctored delivery options for the B-1 trade exam, though the same approved-reference rules apply either way.
Yes. B-1 applicants may use the NASCLA Accredited Commercial General Building exam in place of the Arizona trade exam as an alternative path to satisfying the exam requirement.
Exam results must be used for the license application within two years of the exam date, so don't delay completing your remaining licensing steps after you pass.