Plumbing Contractor Permit Requirements in Phoenix, AZ

Complete permit and license guide for starting a plumbing contractor in Phoenix, Maricopa County, Arizona.

Verified 2026-08-27 6 stops $900–$2,500 est. 6–10 weeks to obtain all licenses and permits
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Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

Federal — start here

1 stop

  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC/corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Arizona

3 stops

  1. Arizona ROC Plumbing Contractor License (CR-37)

    Required to contract for plumbing work in Arizona. Issued by the Arizona Registrar of Contractors: CR-37 Plumbing (dual; C-37/R-37 single-scope variants exist). Applicants need 4 years of qualifying trade experience, must pass the trade exam and the business management (Statutes & Rules) exam, and must post a surety bond set by license type and estimated annual volume (ARS 32-1152) — ROC does not require proof of liability insurance. Workers' compensation is required if you have employees. Licenses renew every two years.

    Official government source

    Application/license fees vary by classification (statutory caps: specialty residential up to $350, specialty commercial up to $1,000, specialty dual up to $1,350 per 2-year term, ARS 32-1126) plus exam fees — see roc.az.gov/licensing-fees for current amounts4–8 weeks

  2. Arizona Contractor Surety Bond

    Arizona plumbing contractors must post a surety bond (or cash deposit) with the ROC in an amount set by license type and estimated annual construction volume (ARS 32-1152): specialty residential $1,000-$7,500; specialty commercial $2,500-$50,000; dual licenses combine both.

    Official government source

    Bond premium varies with bond amount and credit1–3 days

  3. Arizona Business Entity Registration (if applicable)

    LLCs and corporations must register with the Arizona Corporation Commission.

    Official government source

    $50 (LLC filing fee)3–7 business days

City of Phoenix / Maricopa County

2 stops

  1. Arizona / Phoenix Transaction Privilege Tax (TPT) License

    Phoenix has no general business license. Plumbing contractors performing taxable contracting work must hold an Arizona TPT license from the Arizona Department of Revenue; licensing for the City of Phoenix is administered centrally by AZDOR.

    Official government source

    $12 state TPT license per location + $50 Phoenix city license fee (via AZDOR)1–5 days (online application)

  2. City of Phoenix — Contractor Registration

    Plumbing contractors must register with the City of Phoenix Planning and Development Department before pulling permits. The Arizona state ROC contractor license number must be on file. No separate city contractor exam is required.

    Official government source

    No additional fee (covered under state license)1–3 days

Terminus

Open for business — est. $900–$2,500 · 6–10 weeks to obtain all licenses and permits

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Official Sources

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