- AZ-B1 is the Arizona B-1 General Commercial Contractor Trade Examination, administered by PSI for the Registrar of Contractors.
- 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 among ten total content areas.
- The trade-exam fee is $66, while total General Commercial application and initial license fees run $780.
What Is AZ-B1?
AZ-B1 refers to the Arizona B-1 General Commercial Contractor Trade Examination, the standardized trade exam required for anyone seeking a General Commercial contractor license in Arizona. This is not a generic industry certification - it is a state-mandated licensing exam tied directly to the Arizona Registrar of Contractors (ROC) and administered through PSI, a professional testing organization. If you're planning commercial construction work in Arizona at the qualifying-party level, passing this exam is a required step before you can legally hold that license.
Because "B-1" is used by other credentialing programs outside Arizona, it's easy to find mismatched information online. This article sticks strictly to the facts of the Arizona B-1 General Commercial trade exam as published in the current PSI candidate bulletin and the B-1 content outline. For a deeper breakdown of terminology confusion around the acronym, see AZ-B1 Meaning and What Does AZ-B1 Stand For?.
Who Governs the Exam
The Arizona Registrar of Contractors sets licensing policy and determines who must sit for the B-1 trade exam, while PSI develops, delivers, and scores the actual test. PSI administers a combined B-1/B-2/KB-1/KB-2 trade examination pool, meaning the underlying question bank supports several related commercial and residential-adjacent license classifications, but B-1 candidates are scored against the B-1 content outline specifically.
The current PSI candidate bulletin is dated February 18, 2026, and the B-1 content outline has been effective since May 9, 2024. Anyone preparing should reference the most current bulletin version, since PSI periodically updates procedures, allowed materials, and scheduling rules. If you're unsure which document version applies to your test date, cross-check against the AZ-B1 Exam Dates 2026: Testing Windows, Deadlines & Scheduling guide.
Exam Format and Structure
The AZ-B1 trade exam is computer-delivered, open-book, and multiple-choice. Here's what candidates can expect on test day:
- 100 scored questions, with PSI reserving the right to insert 5 to 10 additional unscored experimental questions that are indistinguishable from scored items.
- 4-hour time limit to complete the full exam.
- 70% passing score required to pass.
- Open-book format, with three approved references permitted in the testing room: OSHA 29 CFR Part 1926, the 2018 International Building Code, and the 2018 International Residential Code.
- A basic silent, nonprinting, nonprogrammable calculator is allowed at test centers.
- Delivery options include both test-center and remote-proctored testing.
Because the exam is open-book, success depends less on rote memorization and more on knowing how to navigate your reference materials quickly under time pressure. That's a different skill than closed-book memorization, and it changes how you should prepare. For a full breakdown of what makes this exam challenging in practice, read How Hard Is the AZ-B1 Exam? Complete Difficulty Guide 2026.
Key Takeaway
Open-book doesn't mean easy - with 100 questions in 4 hours, you have roughly 2.4 minutes per question, leaving little time to search unfamiliar code sections. Tab and index your references before test day.
The 10 Exam Domains
The B-1 content outline organizes the exam into ten domains, each representing a slice of commercial construction knowledge. Understanding the relative weight of each domain helps you allocate study time efficiently rather than spreading effort evenly across topics that don't carry equal exam value.
Domain 1: Sitework
Covers excavation, grading, and site preparation concepts relevant to commercial projects before structural work begins.
- Site layout and earthwork sequencing
Domain 2: Concrete (14% - largest domain)
The single heaviest-weighted domain. Expect questions on formwork, reinforcement, curing, and placement practices tied to IBC provisions.
- Prioritize this domain first in your study schedule
Domain 3: Masonry
Focuses on masonry construction methods and code-driven requirements used in commercial builds.
- Cross-reference masonry sections in the 2018 IBC
Domain 4: Metals (13% - second largest domain)
Structural steel, connections, and metal framing knowledge make this the second-heaviest domain on the exam.
- Pair study time with Concrete since both dominate the scoring weight
Domain 5: Carpentry
Rough and finish carpentry practices as applied to commercial structures.
Domain 6: Thermal and Moisture Protection
Insulation, waterproofing, and roofing systems knowledge.
Domain 7: Doors and Windows
Installation standards and code compliance for openings.
Domain 8: Finishes
Interior and exterior finish materials and application standards.
Domain 9: Safety
Jobsite safety practices, closely tied to the OSHA 29 CFR Part 1926 reference allowed in the exam room.
Domain 10: General Building Code
Broad code knowledge drawn from the 2018 IBC and 2018 IRC that ties the other domains together.
For a domain-by-domain study breakdown with more depth on subtopics inside each area, see AZ-B1 Exam Domains 2026: Complete Guide to All 10 Content Areas.
| Domain | Relative Weight |
|---|---|
| Concrete | 14% (highest) |
| Metals | 13% (second highest) |
| Sitework, Masonry, Carpentry, Thermal & Moisture Protection, Doors & Windows, Finishes, Safety, General Building Code | Remaining domains, distributed across the rest of the outline |
Registration, Fees, and Logistics
The trade-exam fee itself is $66, paid to PSI to sit for the test at a physical test center or via remote proctoring. This fee is separate from the state's licensing costs. Once you pass, exam results must be used toward your license application within two years - after that window, you'd need to retest.
Licensing costs extend beyond the exam fee. General Commercial application and initial license fees total $780, and renewing the license every two years costs $580. These figures are distinct from exam prep costs and should be budgeted separately when planning your path to licensure. A full cost breakdown, including how the $66 trade-exam fee fits into the bigger financial picture, is available in AZ-B1 Certification Cost 2026: Complete Pricing Breakdown.
Eligibility and Requirements
Before you can sit for the AZ-B1 exam or apply for licensure, you'll need to satisfy the ROC's qualifying-party experience standard. Generally, this means four years of practical or management-level trade experience, with at least two of those years occurring within the preceding ten years. Approved technical education can substitute for up to two years of that experience requirement, reducing the hands-on time needed for candidates with relevant coursework or training.
Beyond experience, applicants must also complete the Arizona Statutes and Rules Training Course and Exam, pass a background check, secure the required bond, and complete the full ROC application process. None of these steps are optional add-ons - they're part of the same licensing pathway that includes the trade exam itself. A complete walkthrough of every prerequisite is covered in AZ-B1 Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Passing the trade exam is one piece of licensure - statutes and rules training, background checks, and bonding all run in parallel and must be completed before your license is issued.
Who Takes the AZ-B1 Exam
The B-1 trade exam is primarily taken by individuals serving as the qualifying party for a General Commercial contracting business in Arizona - often owners, project managers, or superintendents who need their technical knowledge verified before the ROC will license the company. Commercial general contracting firms bidding on office buildings, retail centers, warehouses, and other non-residential structures typically need at least one licensed qualifying party who has passed this exam.
Employers hiring for qualifying-party roles or senior construction management positions frequently list an active B-1 license as a requirement or strong preference. If you're researching how this credential translates into job opportunities and career positioning, AZ-B1 Jobs covers the employment landscape, and AZ-B1 Salary Guide 2026: Complete Earnings Analysis looks at how licensure affects earning potential. For a broader look at whether the investment of time and fees pays off, see Is the AZ-B1 Certification Worth It? Complete ROI Analysis 2026.
A Domain-Weighted Study Approach
Because Concrete and Metals together account for a substantial share of exam content, an efficient study plan front-loads these two domains before moving to lighter-weighted areas. This isn't about generic scheduling tricks - it's about matching study hours to the outline's actual point distribution.
Concrete and Metals
- Work through formwork, reinforcement, and structural steel questions since these two domains carry the most combined weight
- Practice navigating the 2018 IBC sections tied to each topic
Sitework, Masonry, Carpentry
- Move through the next tier of domains, tabbing relevant IBC and IRC sections as you go
Thermal/Moisture, Doors/Windows, Finishes, Safety
- Pay special attention to Safety questions, which draw directly from OSHA 29 CFR Part 1926
General Building Code and Full Timed Practice
- Run full-length, timed practice sessions to simulate the 4-hour limit and 100-question pace
For a more detailed week-by-week plan with specific reference-material navigation tactics, see AZ-B1 Study Guide 2026: How to Pass on Your First Attempt. And if you want a condensed reference for last-minute review, the AZ-B1 Cheat Sheet 2026: One-Page Review of Must-Know Facts summarizes the highest-yield facts in one page.
Practicing under realistic conditions matters more for an open-book exam than a closed-book one, since your speed at locating information in the IBC, IRC, and OSHA references directly affects whether you finish all 100 questions in time. Running full practice exams on our practice test platform is one of the most direct ways to build that speed before test day.
After You Pass
Once you pass the trade exam, you have a two-year window to apply your results toward an actual license application with the ROC. During this window, you'll still need to finish any outstanding requirements - statutes and rules training, background check, bonding, and the formal application - before the license is issued. Missing the two-year window means the exam result expires and retesting becomes necessary.
If you're still deciding whether this is the right exam to prepare for, or want confirmation that you're studying the correct credential, review AZ-B1 Certification and What Is AZ-B1 Certification? for additional context on how the trade exam fits into the overall licensing process. You can also start building familiarity with the question style right away through practice questions modeled on the actual exam format.
Frequently Asked Questions
You need a 70% score on the 100 scored questions to pass. A detailed explanation of how scoring works, including the unscored experimental questions, is covered in AZ-B1 Passing Score 2026: Exactly What You Need to Pass.
Yes. Candidates may bring OSHA 29 CFR Part 1926, the 2018 International Building Code, and the 2018 International Residential Code into the exam room, along with a basic nonprogrammable calculator.
PSI offers both test-center and remote-proctored delivery options for the AZ-B1 trade exam, giving candidates flexibility in how they sit for the test.
Yes. B-1 applicants may submit a passing NASCLA Accredited Commercial General Building exam result in place of the Arizona trade exam.
Exam results must be used toward a license application within two years of passing; otherwise the result expires and the exam must be retaken.