Plumbing Contractor Permit Requirements in Huntsville, AL

Complete permit and license guide for starting a plumbing contractor in Huntsville, Madison County, Alabama.

Updated 2026-03-15 5 stops $400–$1,200 est. 4–10 weeks to obtain all licenses
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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 or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Alabama

1 stop

  1. Alabama Department of Revenue — Sales Tax License

    Required for all businesses selling tangible personal property or taxable services in Alabama. Alabama's state sales tax rate is 4%. Local city and county sales taxes are additional and can be significant (total rates range from 5–10%). Register with the Alabama Department of Revenue via My Alabama Taxes (MAT).

    Official government source

    Free1–5 business days (online via MAT)

City of Huntsville / Madison County

3 stops

  1. Alabama Plumbers and Gas Fitters Examining Board — Master Plumber License

    Plumbing contractors in Alabama must hold a Master Plumber License from the Alabama Plumbers and Gas Fitters Examining Board. Requires journeyman experience and passing a state exam.

    Official government source

    $100–$250 (initial)4–8 weeks

  2. City of Huntsville License and Revenue Department — Business License

    Huntsville requires an Occupational License for all businesses within city limits. The License and Revenue Department issues licenses annually based on projected and actual gross revenues. This license must be renewed annually and displayed at your place of business.

    Official government source

    $50–$500/year depending on business type and gross revenues1–3 weeks

  3. Madison County / Huntsville Plumbing Permit (per project)

    A separate permit must be pulled with the local building/plumbing department for each job. Inspections are required upon job completion.

    Official government source

    $50–$300 per project1–5 business days

Terminus

Open for business — est. $400–$1,200 · 4–10 weeks to obtain all licenses

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Official Sources

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