Prepare for Arizona B-1, B-2, KB-1, and KB-2 contractor licensing with the combined Arizona trade exam or an accepted NASCLA examination path.
B-1 · B-2 · KB-1 · KB-2 · NASCLA
The Arizona Registrar of Contractors combines the B-1, B-2, KB-1, and KB-2 classifications under one building trade examination. Candidates take the combined exam and apply for the classification that matches their experience and intended scope of work.
Qualifying applicants may use the NASCLA Commercial General Building examination for certain Arizona dual-building classifications. The NASCLA Electrical examination may also be available for qualifying C-11, CR-11, and R-11 electrical classifications.
Arizona Combined Exam
Preparation for Arizona's combined B-1, B-2, KB-1, and KB-2 building contractor trade examination.
Multi-State Exam Option
A multi-state commercial trade exam option tailored to Arizona B-1, B-2, KB-1, and KB-2 licensing goals.
Important: The required examination depends on the exact Arizona classification and the applicant's licensing path. Confirm current Arizona Registrar of Contractors requirements before registering.
Online course access plus the complete required reference bookset.
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| Classification | General Scope | Exam Path |
|---|---|---|
| B-1 General Commercial | General commercial construction and alteration | Combined Arizona building exam |
| B-2 General Small Commercial | Small commercial construction within the classification limit | Combined Arizona building exam |
| KB-1 Dual Building | Commercial and residential building work | Combined Arizona exam or qualifying NASCLA path |
| KB-2 Dual Residential and Small Commercial | Residential and qualifying small commercial work | Combined Arizona exam or qualifying NASCLA path |
| C-11 / CR-11 / R-11 Electrical | Electrical contracting classifications | Arizona trade exam or qualifying NASCLA Electrical path |
NASCLA Electrical: Learn more about the electrical exam option on the NASCLA Electrical in Arizona page.
The B-1, B-2, KB-1, and KB-2 classifications share one combined Arizona building trade examination.
B-1 is Arizona's general commercial building classification for qualifying commercial construction and alteration work.
B-2 covers qualifying small commercial projects within the scope and project-value limits established for that classification.
KB-1 is a broader dual building classification covering commercial and residential work. KB-2 combines residential construction with qualifying small commercial work.
Qualifying applicants may use the NASCLA Commercial General Building examination for certain Arizona classifications. Confirm current acceptance and application requirements with the Arizona Registrar of Contractors.
The NASCLA Electrical examination may be available as an alternative trade exam for qualifying C-11, CR-11, and R-11 electrical classifications. Verify the current requirements before registering.
NASCLA is often selected by contractors planning to pursue licenses in multiple participating jurisdictions because the same trade-exam result may support more than one state application.
No. Passing the required exam is only one part of licensing. Applicants must also satisfy Arizona ROC application, experience, financial, background, bonding, and fee requirements that apply to the selected classification.
Choose the Arizona combined exam or NASCLA preparation path that matches your classification and licensing goals.
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