Arizona plumbing contractor license: Complete 2026 Guide

Official-source review: August 25, 2026

Arizona plumbing contractor license: Arizona’s ROC issues commercial C-37, residential R-37R and dual CR-37 plumbing licenses. C-37 includes piping, fixtures, drainage, gas and specified septic work; the residential and dual scopes must be matched carefully to the planned projects.

Fast answer: Select C-37, R-37R or CR-37, designate a qualifying party, document the required plumbing experience, pass the Arizona SRE and classification trade examination, complete background checks and submit the business application with its bond and two-year fees.

Arizona plumbing contractor license classifications experience examinations fees bond and renewal — Arizona requirements summarized from the responsible agencies. Local permits, employers and certifying bodies may impose additional conditions.

What the Arizona plumbing contractor license covers

Arizona’s ROC issues commercial C-37, residential R-37R and dual CR-37 plumbing licenses. C-37 includes piping, fixtures, drainage, gas and specified septic work; the residential and dual scopes must be matched carefully to the planned projects.

C-37 commercial plumbing, piping, fixtures, drainage and related systems.
R-37R residential plumbing.
CR-37 combined commercial and residential plumbing.
Local plumbing permits, inspections and code requirements.

Testing assemblies requires the separate Arizona backflow tester certification.

Arizona plumbing contractor license requirements at a glance

Requirement	Current rule or route
Route	C-37 commercial, R-37R residential or CR-37 dual Plumbing
Eligibility	Generally four years of practical or management experience in the classification, including two years within the preceding ten; approved technical training may replace up to two years.
Exam	Arizona Statutes and Rules Training Course and Exam plus the classification trade exam, each passed with at least 70%, unless an approved waiver applies.
Fees	Two-year ROC totals before exams and bond are $580 commercial, $720 residential or $850 dual specialty.
Bond or insurance	Maintain the ROC contractor bond, workers compensation when applicable and liability protection appropriate to plumbing operations.
Renewal	Every two years.

Do not treat this table as an approval notice. The agency, certification organization or local jurisdiction makes the final eligibility decision and may request additional evidence.

How to complete the Arizona plumbing contractor license process

Confirm the required classification.
Document experience and training.
Complete examinations and background checks.
Submit the application, bond and fees.
Obtain local permits before work.
Renew on time.

Keep copies of every experience certificate, examination result, bond or insurance filing and payment receipt. Names and business entities should match across the application and supporting documents.

Important Arizona rules and boundaries

Backflow testing certification is separate from plumbing authority.
The scope does not automatically authorize public utility-main work.
Specialized solar plumbing classifications exist for solar-thermal projects.
Local permits and inspections remain separate.

Arizona may separate the credential held by a worker from the contractor license held by the business, while preserving local authority over permits and inspections. Confirm every applicable layer before bidding, advertising or beginning regulated work.

Arizona plumbing contractor license cost and renewal

Add training, examination, bond, equipment and local costs.

Renew by the published deadline and retain supporting records.

Government charges are only part of the expected cost. Training, examination preparation, fingerprints, surety premiums, insurance, equipment calibration and local permits can add to the total.

Arizona plumbing contractor license checklist

Confirm that this credential matches the exact work you will perform.
Check whether the applicant is an individual, sole owner or separate business entity.
Collect experience and training records before submitting the application.
Use the current official form and fee schedule.
Complete every required examination or approved certification route.
File bonds, insurance and fingerprints when applicable.
Check county, city, water supplier and building-permit rules.
Save the expiration date and renewal requirements.

Frequently asked questions

Is this credential statewide?

Yes; local permits and inspections remain separate.

Is an exam required?

Arizona Statutes and Rules Training Course and Exam plus the classification trade exam, each passed with at least 70%, unless an approved waiver applies.

When does it renew?

Every two years.

Are local approvals separate?

Yes.

Official sources used

Verified licensing details

Jurisdiction: state credential plus local permits and inspections
Licensing authority: Arizona Registrar of Contractors
Fees: Two-year ROC totals before exams and bond are $580 commercial, $720 residential or $850 dual specialty.
Experience: Generally four years of practical or management experience in the classification, including two years within the preceding ten; approved technical training may replace up to two years.
Exams: Arizona Statutes and Rules Training Course and Exam plus the classification trade exam, each passed with at least 70%, unless an approved waiver applies.
Insurance or bond: Maintain the ROC contractor bond, workers compensation when applicable and liability protection appropriate to plumbing operations.
Continuing education: No routine ROC continuing-education requirement; stay current with adopted codes and manufacturer requirements.
Renewal period: Every two years.

Official sources

Official sources last checked August 24, 2026.

Requirements can change and local rules may apply. Confirm the current requirements with the official authority before paying a fee or beginning work.