- What Is the AZ-B1?
- Who Governs and Administers the Exam
- Exam Format, Timing, and Scoring
- The 10 AZ-B1 Content Domains
- Approved References and Calculator Rules
- Who Can Sit for the AZ-B1
- Registration, Fees, and Deadlines
- Who Actually Needs This License
- A Domain-Weighted Way to Prepare
- Frequently Asked Questions
- The AZ-B1 is the Arizona B-1 General Commercial Contractor trade exam, administered by PSI for the Registrar of Contractors.
- It's a 100-question, open-book, computer-delivered exam with a 4-hour limit and a 70% passing score.
- Concrete (14%) and Metals (13%) are the two heaviest of the 10 content domains.
- The trade-exam fee is $66; approved references are OSHA 1926, the 2018 IBC, and the 2018 IRC.
What Is the AZ-B1?
The AZ-B1 is the trade competency examination required for Arizona's B-1 General Commercial Contractor license. It's the test a qualifying party - the individual whose experience and knowledge back a construction business - must pass before that business can legally bid and perform commercial building work in Arizona. This isn't a generic "contractor test." It's a specific, code-and-craft exam built around the actual scope of commercial construction: sitework through finishes, structural systems, and the building codes that govern all of it.
If you've landed here searching for a quick definition, this guide breaks down exactly what the exam covers, how it's scored, and what it takes to qualify - without borrowing facts from any other credential that happens to share the "AZ-B1" label. For a deeper walkthrough of every content area, see the AZ-B1 Exam Domains 2026 guide.
Who Governs and Administers the Exam
Two organizations sit behind the AZ-B1. The Arizona Registrar of Contractors (ROC) sets licensing policy, reviews applications, and issues the B-1 license itself. PSI is the testing vendor that actually builds and delivers the exam - the same combined trade exam also covers the related B-2, KB-1, and KB-2 classifications, since those share overlapping commercial scope.
PSI publishes a candidate bulletin that spells out registration steps, testing rules, and policies; the version referenced for this guide is dated February 18, 2026. The content outline that defines what's actually tested has been effective since May 9, 2024. If you're comparing older prep material against current requirements, always check the bulletin date first - outlines and rules can shift between revisions.
Exam Format, Timing, and Scoring
The AZ-B1 trade exam is computer-delivered and open-book, meaning you're allowed to bring approved printed references into the testing session rather than relying purely on memorization. Here's the breakdown:
- 100 scored multiple-choice questions, plus PSI may insert 5 to 10 additional unscored experimental questions that look identical to scored items but don't count toward your result.
- 4-hour time limit - roughly 2.4 minutes per question if you include potential experimental items, though open-book format means some questions require you to look up a code section rather than recall it outright.
- 70% passing score is required to pass.
- $66 trade-exam fee, separate from ROC application and license fees.
- Available via test-center or remote-proctored delivery, giving candidates flexibility on where they sit for it.
For a full breakdown of exactly how the score threshold is calculated and what it means in practice, see AZ-B1 Passing Score 2026. And if you're weighing how demanding this exam actually is relative to the time you have to prepare, How Hard Is the AZ-B1 Exam? digs into that directly.
Key Takeaway
Because the exam is open-book, your prep time is better spent learning where information lives in the IBC, IRC, and OSHA 1926 than trying to memorize every code number cold.
The 10 AZ-B1 Content Domains
The AZ-B1 content outline organizes questions into 10 domains that mirror the sequence of a commercial building project - from dirt to drywall. Two domains carry more weight than the rest, so they deserve proportionally more study time.
Domain 2: Concrete (14% - largest domain)
Covers formwork, reinforcement, mix design basics, curing, and placement practices. As the single heaviest domain, this is where a weak foundation in your prep can cost you the most points.
- Expect questions tying concrete practices directly to IBC structural requirements.
Domain 4: Metals (13% - second largest)
Structural steel, connections, fasteners, and metal framing components used in commercial assemblies.
- Know common metal building components and how they interact with other structural systems.
The remaining eight domains - Sitework, Masonry, Carpentry, Thermal and Moisture Protection, Doors and Windows, Finishes, Safety, and General Building Code - round out the outline. Safety questions draw heavily on OSHA 29 CFR Part 1926, while General Building Code questions test your ability to navigate the 2018 IBC and 2018 IRC directly during the exam. A domain-by-domain breakdown with study priorities for each is available in the AZ-B1 Exam Domains 2026 guide.
| Domain | Focus Area |
|---|---|
| Sitework | Earthwork, excavation, site prep |
| Concrete (14%) | Formwork, reinforcement, placement |
| Masonry | Block, brick, mortar systems |
| Metals (13%) | Structural steel, framing, fasteners |
| Carpentry | Framing, rough and finish carpentry |
| Thermal and Moisture Protection | Insulation, waterproofing, roofing |
| Doors and Windows | Installation, hardware, code fit |
| Finishes | Interior/exterior finish systems |
| Safety | OSHA 1926 jobsite safety practices |
| General Building Code | 2018 IBC / 2018 IRC application |
Approved References and Calculator Rules
Because this is an open-book exam, knowing what you can bring is as important as knowing the material. Approved exam-room references are:
- OSHA 29 CFR Part 1926 - the federal construction safety standard
- 2018 International Building Code (IBC)
- 2018 International Residential Code (IRC)
You're also permitted a basic silent, nonprinting, nonprogrammable calculator at the test center. There's no allowance for personal notes, highlighted-and-annotated printouts beyond what's permitted, or digital devices - so your familiarity with the physical layout of these three references matters as much as the content itself. Practicing with tabbed, organized copies of the IBC, IRC, and OSHA 1926 before test day will save real minutes during the 4-hour window.
Who Can Sit for the AZ-B1
The AZ-B1 isn't something you can register for on a whim - it's tied to the ROC's qualifying party requirements. In general, a qualifying party needs:
- Four years of practical or management trade experience, including at least two years within the preceding ten years.
- Approved technical education may substitute for up to two years of that experience requirement.
- Completion of the Arizona Statutes and Rules Training Course and Exam.
- Successful background-check, bonding, and full application submission through the ROC.
Notably, applicants have an alternative path: the NASCLA Accredited Commercial General Building exam can be used in place of the Arizona trade exam for B-1 applicants who've already completed it. Once you pass the AZ-B1 trade exam, results are only valid for two years - you must use them on a license application within that window or retest. Full eligibility mechanics, including documentation candidates commonly get wrong, are covered in AZ-B1 Requirements 2026.
Registration, Fees, and Deadlines
Budgeting for the AZ-B1 involves more than just the test itself. Here's how the costs break down:
- $66 - trade-exam fee paid to PSI
- $780 - combined General Commercial application and initial license fees paid to the ROC
- $580 - two-year renewal fee once licensed
These figures cover the licensing side; a full pricing breakdown including how these fees stack against the rest of the licensing process is in AZ-B1 Certification Cost 2026. For scheduling logistics - test-center vs. remote-proctored windows, how far in advance to book, and what to do if you need to reschedule - see AZ-B1 Exam Dates 2026.
Key Takeaway
Treat the $66 exam fee as the smallest line item - the larger financial commitment is the $780 in application and license fees once you pass, plus the $580 due at each two-year renewal.
Who Actually Needs This License
The B-1 classification is aimed squarely at commercial construction: office buildings, retail centers, industrial facilities, and other structures that fall outside strictly residential scope. Qualifying parties are typically project managers, superintendents, or owner-operators who've worked their way up through commercial trades and now want to hold a license that lets their company bid general commercial work directly, rather than working as a subcontractor under someone else's license.
General contracting firms, construction management companies, and design-build outfits operating in Arizona's commercial market are the primary employers hiring for roles tied to this license. If you're evaluating whether pursuing this path makes financial sense for your career trajectory, Is the AZ-B1 Certification Worth It? lays out the ROI considerations, and AZ-B1 Jobs looks at the roles this license typically opens up. Compensation expectations for licensed qualifying parties and the businesses they run are discussed in AZ-B1 Salary Guide 2026.
A Domain-Weighted Way to Prepare
Rather than studying all 10 domains equally, allocate time in proportion to how heavily they're tested - Concrete and Metals first, then the remaining eight domains, with Safety and General Building Code getting extra attention because they draw directly from your approved references.
Concrete and Metals
- Work through formwork, reinforcement, and structural steel questions since these two domains carry the most combined weight.
Sitework, Masonry, Carpentry
- Move through mid-weight domains while practicing quick lookups in the 2018 IBC.
Thermal/Moisture, Doors/Windows, Finishes
- Cover remaining building-envelope domains and cross-reference the 2018 IRC where relevant.
Safety and General Building Code
- Drill OSHA 1926 scenarios and full-length practice questions under the actual 4-hour time constraint.
Whatever schedule you use, the goal is the same: know your references cold enough that lookups are fast, not slow. A structured walkthrough of this exact approach, with more detail per domain, is in the AZ-B1 Study Guide 2026. If you want a condensed, single-page reference to review right before test day, the AZ-B1 Cheat Sheet 2026 compiles the must-know facts in one place. And once you're ready to test your readiness under realistic conditions, our practice test platform mirrors the actual format so there are no surprises on exam day.
If you're still deciding whether to sit for the AZ-B1 or want a broader look at pass-rate context and outcome data before committing, AZ-B1 Pass Rate 2026 and general background pieces like AZ-B1 Certification or What Is AZ-B1? are good next reads. You can also start practicing right away at AZ-B1 Exam Prep to see how your current knowledge measures up against the real domain weighting.
Frequently Asked Questions
It refers to the Arizona B-1 General Commercial Contractor Trade Examination, the PSI-administered test tied to the Registrar of Contractors' B-1 license classification. See AZ-B1 Meaning for more on the terminology.
Yes. Candidates may bring OSHA 29 CFR Part 1926, the 2018 IBC, and the 2018 IRC into the test session, along with a basic silent, nonprinting, nonprogrammable calculator.
There are 100 scored multiple-choice questions with a 4-hour time limit. PSI may add 5 to 10 unscored experimental questions that don't count toward your score.
Yes. B-1 applicants may use the NASCLA Accredited Commercial General Building exam in place of the Arizona-specific trade exam.
Passing results must be used on a license application within two years of the exam date, or you'll need to retest.