Arizona Plumbing Contractor License Cost & Requirements (2026)
Arizona licenses plumbing businesses, not plumbers. The Registrar of Contractors issues the CR-37 Plumbing classification to a legal entity, a sole proprietorship, partnership, LLC or corporation, and the entity works through a qualifying party whose experience and examinations stand behind the license. There is no Arizona journeyman or master plumber license underneath it: the plumbers a CR-37 firm sends into homes and commercial buildings work under the entity's license, which is why Arizona's plumbing labor market organizes itself around licensed firms rather than licensed individuals.
This page covers the dual CR-37, which combines the residential (R-37) and commercial (C-37) scopes in one license, on the ROC's specialty fee schedule: $100 to apply, $120 of examinations, $380 for the two-year license, plus the $370 Residential Recovery Fund assessment that dual and residential licensees pay. It was rebuilt in October 2026 from the fee schedule at Arizona Administrative Code R4-9-130 and the classification scopes at R4-9-102 to R4-9-104.
Arizona Plumbing Contractor Fee Estimator
Regulatory fee breakdown for CR-37 Plumbing (Arizona ROC)
Arizona requires a $6,750 surety bond. Its annual premium is set by the surety provider; the board publishes no rate, so it is not included in the total.
Itemized Fee Schedule
Need your $6,750 Surety Bond?
Boards do not sell bonds. Before you buy one, read how a surety bond works, what the premium is based on, and how a bond differs from liability insurance.
Read: Bonds vs Liability InsuranceArizona Registrar of Contractors (AZ ROC)
All applications and exams must be registered directly with this board.
Fee figures on this page were checked against Arizona Registrar of Contractors — A.A.C. R4-9-130 fee schedule; classification scopes at R4-9-102 to R4-9-104 on October 30, 2026. View the official source
Regulatory & Licensing Requirements Summary
| Official License Classification | CR-37 Plumbing (Arizona ROC) |
| Minimum Experience | 4 Years (Journeyman / Field Supervisor) |
| Mandatory State Surety Bond | $6,750 Bond Required |
| General Liability Insurance | Not required. The ROC does not require liability insurance for licensure (workers' compensation insurance excepted). |
| Estimated Application Processing Time | Not published by the board |
| Renewal Cycle & CE Requirement | Every 2 year(s), with no continuing education requirement |
Warning: Unlicensed Contracting Penalties in Arizona
Class 1 misdemeanor (§32-1164): a first offense carries a fine of not less than $1,000 (not less than $2,000 for later offenses) and up to 6 months in jail, plus statutory surcharges that currently add about 79%.
Note: In many states, unlicensed contractors also lose the ability to file mechanic's liens or sue for non-payment in civil courts.
Special Statutory Notes for Arizona
Arizona licenses the plumbing business, never the plumber. The CR-37 Plumbing classification, dual license covering residential (R-37) and commercial (C-37) work, is issued by the Registrar of Contractors (ROC) to a business entity, with no state journeyman or master license beneath it: plumbers work under the entity's license and its qualifying party, who needs 4 years of practical or management plumbing experience.
Its scope: installing, altering and repairing water supply systems, drainage and venting, pressure vessels and septic tanks within property lines, plus water conditioning equipment, gas lines and fuel systems within the state's pressure limits. One edge matters: plumbing including solar sits in its own classification, CR-77, not CR-37. The commercial-only version costs $100 application / $480 license / $480 renewal with no Recovery Fund assessment.
The residential-only version costs $80 / $270 / $270 plus the Fund. On this dual license the Residential Recovery Fund assessment is $370 with the first license and $270 at every renewal, on top of the renewal fee. Applicants pass two exams: the Arizona Statutes and Rules exam ($54) and the trade exam through PSI ($66), and every person named must pass a background check whose cost the ROC does not publish.
The bond combines both scales for gross volume of work. The smallest dual licensees post $6,750: $4,250 residential for under $375,000 of residential work plus $2,500 commercial for under $150,000 of commercial work, stated separately on one bond, rising with volume. A cash deposit can replace it. Arizona requires no continuing education for ROC licenses, and licenses renew every 2 years.
Arizona licenses contractors statewide through the Registrar of Contractors (ROC). A license is required for any project of $1,000 or more in total cost (labor, materials and all other items), and for any work that needs a building permit, however small.
Scope: the systems inside the property line
The CR-37 authorizes its holder to install, alter and repair water supply systems, drainage and venting, pressure vessels and septic tanks within property lines, and extends to water conditioning equipment and to gas lines and fuel systems within the pressure limitations the state sets.
That property-line framing is the classification's center of gravity: the systems of a building, from where the service enters to where the waste leaves, are the plumber's; the utility's side of the line and the sewer mains beyond it belong to other classifications (sewers, drains and pipe laying is its own class, CR-80). A contractor whose work includes solar water heating should note the separate CR-77, Plumbing Including Solar, which pairs the same plumbing scope with solar work and its own examination endorsements.
The dual structure is a commercial decision before it is anything else. A firm that only ever works on houses can hold the R-37 alone at $80 application and $270 for the license; a firm that only does commercial work takes the C-37 at $100 and $480 with no Recovery Fund assessment at all, because the Fund exists to protect residential customers.
The CR-37 at $100, $380 and the $370 Fund assessment is the license of the firm that does both, which in Arizona's housing-heavy market is most established plumbing businesses.
The qualifying party, and what four years means here
Every ROC license stands on its qualifying party: a person regularly employed by the entity, with the experience the classification requires, who passes both examinations, the Arizona Statutes and Rules exam ($54, a test of the licensing law itself) and the CR-37 trade exam through PSI ($66).
For plumbing the requirement is four years of practical or management experience in the trade. Management experience counts alongside hands-on years, which is how the ROC recognizes that the person standing behind a plumbing business may run crews rather than swing wrenches, but the experience must be plumbing experience, documented and certifiable by employers or licensees who know it.
Every person named on the application, owners and officers as well as the qualifying party, passes a background check; the ROC does not publish the check's cost, and this page does not guess it. The application itself goes in as the entity: Arizona will not license an individual as such, so a plumber going independent forms at least a sole proprietorship and licenses that.
A license is required once a job crosses $1,000 in combined labor and materials, or whenever a permit is required, and splitting a job into smaller contracts to stay under the threshold is prohibited by statute.
Renewal, the Recovery Fund, and the bond that scales
The license runs two years and renews at $380, plus the Recovery Fund's $270 renewal assessment on the dual license. The Fund, created by A.R.S. 32-1132, reimburses owner-occupants (and certain other residential claimants) harmed by a licensed residential contractor's failure to perform, up to statutory caps per claim and per license; it is financed by the assessments on residential and dual licensees, which is why commercial-only licensees never pay it. Arizona requires no continuing education for any ROC license, so renewal is money and paperwork, not coursework.
The bond is the figure new applicants mis-budget, because it is not one figure: it scales with the licensee's gross volume of work, on separate residential and commercial scales stated on a single bond.
The smallest dual plumbing licensees post $6,750 in total ($4,250 on the residential scale for under $375,000 of residential work, plus $2,500 on the commercial scale for under $150,000 of commercial work), and the amounts climb as volume grows; a cash deposit may be posted in place of the bond. The premium a surety charges on that bond is a market price, and this site leaves it unquoted rather than invent one.
Mistakes that delay a Arizona Plumber application
- Looking for a journeyman or master plumber license: Arizona has neither. The ROC licenses the entity, and individuals work under its license and qualifying party.
- Applying as a person: licenses issue to legal entities only. A solo plumber licenses a sole proprietorship, not themselves.
- Forgetting the Recovery Fund in the budget: a dual license's first state charges are $970, not $600, once the $370 assessment is counted, and $270 rides on every renewal.
- Treating the $6,750 bond as the bond: it is the smallest dual tier. The amount scales with gross volume on separate residential and commercial scales.
- Splitting contracts to stay under the $1,000 licensing threshold: expressly prohibited by A.R.S. 32-1121(A)(14).
- Assuming the commercial-only license also pays the Fund: it does not. The assessment attaches to residential and dual licenses, because the Fund protects residential customers.
Arizona Plumber Licensing FAQ
What does an Arizona CR-37 plumbing license cost in total?
In ROC charges, $970 for the dual license: a $100 application fee, $120 of examinations ($54 Statutes and Rules plus the $66 PSI trade exam), the $380 two-year license fee and the $370 Residential Recovery Fund assessment. Renewal every two years is $380 plus the Fund's $270. The residential-only R-37 totals $840 at entry ($80 + $120 + $270 + $370) and the commercial-only C-37 $700 ($100 + $120 + $480), with no Fund assessment. The volume-scaled bond premium and background check costs sit outside these figures.
Does Arizona have journeyman or master plumber licenses?
No. Arizona licenses plumbing at the business level only: the ROC issues R-37, C-37 or the dual CR-37 to a legal entity, whose qualifying party (four years of practical or management plumbing experience, both examinations passed) stands behind it. Individual plumbers work under the entity's license; there is no personal state license for them to hold.
What work does the CR-37 cover?
Installing, altering and repairing water supply systems, drainage and venting, pressure vessels and septic tanks within property lines, plus water conditioning equipment and gas lines and fuel systems within the state's pressure limits. Plumbing with solar is a sibling classification (CR-77), and sewers, drains and pipe laying beyond the property's systems is CR-80.
How much is the Arizona plumbing contractor bond?
It scales with gross volume, stated on one bond across two scales. The smallest dual licensees post $6,750 in total: $4,250 residential (under $375,000 of residential work) plus $2,500 commercial (under $150,000 of commercial work). The amounts rise with volume, a cash deposit can replace the bond, and what you actually pay is a surety's premium on the amount, which this page does not estimate.
What is the Residential Recovery Fund assessment?
A charge on residential and dual ROC licenses that finances the Arizona Residential Contractors' Recovery Fund (A.R.S. 32-1132), which reimburses eligible residential customers harmed by a licensed contractor's failure to perform, within statutory caps. It is $370 with the first license and $270 at each renewal. Commercial-only licenses do not pay it.
When is a plumbing license required in Arizona?
Once a job crosses $1,000 in combined labor and materials, or whenever the work requires a permit. Below that line, minor work may be unlicensed under the handyman exemption, but the exemption is narrow and splitting a larger job into sub-$1,000 contracts to stay under it is prohibited.
How much does a Plumbing Contractor license cost in Arizona?
The filing and licensing fees on the Arizona Plumbing Contractor schedule total approximately $970. This consists of a $100 application fee, a $120 examination fee, and a $380 initial license fee. The remaining $370 covers the residential Recovery Fund assessment (initial) ($370). A $6,750 surety bond is also required; its annual premium is set by the surety provider and no official rate is published.
How long does it take to get a Plumbing Contractor license in Arizona?
Arizona Registrar of Contractors (AZ ROC) does not publish a fixed end-to-end processing time for this license.
What are the penalties for working as an unlicensed Plumber in Arizona?
Class 1 misdemeanor (§32-1164): a first offense carries a fine of not less than $1,000 (not less than $2,000 for later offenses) and up to 6 months in jail, plus statutory surcharges that currently add about 79%.
How often do you need to renew a Plumber license in Arizona?
Licenses must be renewed every 2 year(s) with a renewal fee of $380. No continuing education is required for renewal.