Arizona renewal guide
Plumbing Contractor (C-37, Commercial)
If this license is up for renewal, this page gives you the fee, the timeline, and the items that usually hold the filing up.
Start here
What matters before you file.
Check the fee, the renewal window, and the documents or insurance records that can slow approval down.
Issuing authority
Renewal period
Every 24 months
Renewal fee
$480.00
Late penalty
$100.00
Bond requirement
Yes — $2,500.00
Insurance requirement
Yes — General Liability, Workers' Compensation
Before you renew
Get the filing straight.
- 1
Make sure the bond still clears
The $2,500.00 bond requirement needs to stay active through the renewal.
- 2
Check the insurance certificates
Make sure the required policies are current and match what the board or agency expects before you file.
- 3
File with the board
File through Arizona Registrar of Contractors (ROC) and pay the $480.00 renewal fee once the supporting proof is ready.
Renew online - 4
Leave room for processing
Typical processing time is 60 days, so do not wait until the last minute.
If you miss the deadline, the late penalty is $100.00, with a 60-day grace period.
Detailed notes
The fine print is here.
Arizona Plumbing Contractor License (C-37, Commercial)
The C-37 Plumbing Contractor license is a commercial specialty license issued by the Arizona ROC for plumbing work on commercial projects.
Requirements
- Experience: 4 years of practical plumbing experience, at least 2 in the last 10 years
- Examinations: SRE exam and Plumbing Trade Exam
- Bond: Commercial specialty surety bond ($2,500-$50,000 based on volume)
- Insurance: General liability and workers' compensation
Renewal Information
- Renewal Period: Every 2 years
- Renewal Fee: $480
- Bond: Must maintain active bond
- Late Renewal Penalty: $100
- Application Fee: $470
Scope of Work
C-37 licensees can:
- Install and repair commercial plumbing systems
- Work on water supply and drainage systems
- Install fixtures and water heating equipment
- Perform backflow prevention
Residential Plumbing (CR-37)
For residential plumbing, the CR-37 classification is available with residential-specific requirements and Recovery Fund assessments.
*Disclaimer: This information is provided for general reference only and does not constitute legal advice. Always verify current requirements directly with the Arizona ROC.*
Official links
Check the board or agency directly.
Required documents
- Proof of Insurance
- surety_bond
- Examination Results
- Experience Documentation
- Background Check
Source notes
AZ ROC . A.R.S. §32-1126 (fees), R4-9-130 (rules). roc.az.gov/licensing-fees. Verified March 2026.
Rules move. Check Arizona Registrar of Contractors (ROC) again before you pay, renew, or schedule work around this requirement.
Next steps
Turn it into a handoff.
Once the rule is clear, these tools help you hand it off cleanly or turn it into a cost plan.
Printable checklist
Arizona checklist
Use the checklist when you need the board link, required documents, and renewal notes in one handoff.
Open checklistCost planning
Estimate this renewal cost
Start the calculator with this state and license selected so you can review the fee, late-risk, bond, insurance, and CE work faster.
Open calculatorTrack the next renewal.
Keep Plumbing Contractor (C-37, Commercial) dates, proof, and official links with the rest of your license work.