Plumbing Contractor Permit Requirements in Phoenix, AZ

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

Updated 2026-02-15 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. This guide was compiled from public and official sources (last updated ) and has not yet been independently source-verified — confirm each requirement before acting on it.

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 (ROC). Applicants must pass a trade and business management exam, have 4 years of experience, provide proof of $500,000 liability insurance, and post a surety bond ($5,000–$15,000 depending on license class). License must be renewed every 2 years.

    Official government source

    $420 application fee + $200 exam fee; $360 biennial renewal4–8 weeks

  2. Arizona Contractor Surety Bond

    Arizona plumbing contractors must maintain a surety bond ($5,000–$15,000) based on the license class. Class A (commercial/industrial) requires $15,000; Class B (residential) requires $5,000.

    Official government source

    $75–$300/year (premium based on bond amount)1–3 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. City of Phoenix Business License

    All businesses operating in Phoenix must obtain a Transaction Privilege Tax (TPT) license from the Arizona Department of Revenue. Phoenix also requires businesses to register for the local TPT. Plumbing contractors must collect and remit tax on certain portions of their work.

    Official government source

    $12 (state TPT license) + local license fee varies1–5 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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