Plumbing Contractor Permit Requirements in Meridian, ID

Complete permit and license guide for starting a plumbing contractor in Meridian, Ada County, Idaho.

Verified 2026-09-06 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. 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 or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Idaho

1 stop

  1. Idaho State Tax Commission — Sales Tax Permit

    Required for all businesses selling taxable goods or services in Idaho. Idaho charges a 6% state sales tax. Some cities have local option taxes. Register with the Idaho State Tax Commission online.

    Official government source

    FreeImmediate (online via TAP)

City of Meridian / Ada County

3 stops

  1. Idaho DOPL State Plumbing Board — Plumbing Contractor License

    Plumbing contractors in Idaho must hold a Plumbing Contractor License, now administered by the Idaho Division of Occupational and Professional Licenses (DOPL) State Plumbing Board (formerly Division of Building Safety).

    Official government source

    $169.50 (initial: $22.50 application + $147 license fee, 3-year term)4–8 weeks

  2. City of Meridian — No General Business License

    Meridian does not require a general business license, and there is no annual renewal or display requirement. A new business moving into a commercial space typically needs a Certificate of Zoning Compliance and a Certificate of Occupancy from Community Development before opening. Only specific activities need a license or permit from the City Clerk's Office: alcohol licenses and catering permits, mobile sales units, temporary use permits, vehicle immobilization, fireworks, pawnbroker and precious metal dealer licenses, and dog licensing. Most businesses need none of these.

    Official government source

    $0 for most businesses — no general license exists; specific activity licenses have their own feesN/A — no general business license to apply for

  3. City of Meridian Plumbing Permit (per project)

    Meridian's Building Services Division — not Ada County — issues plumbing permits for each job inside city limits. Applications are filed through the city's Citizen Access portal, plans go through Project Dox, and inspections are required at rough-in and completion.

    Official government source

    Residential: $30 per living unit plus $8 per fixture (sewer line $38; sewer/water combination inspection $50). Commercial: 3% of job value plus a $30 base fee for projects up to $20,000, with lower marginal rates above that.Simple trade permits are typically issued within a few business days; permits attached to a plan review take longer.

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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