Plumbing Contractor Permit Requirements in Columbus, OH

Complete permit and license guide for starting a plumbing contractor in Columbus, Franklin County, Ohio.

Updated 2026-02-15 5 stops $500–$1,500 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 Ohio

2 stops

  1. Ohio Plumbing License — State vs. Local

    Ohio does not issue a statewide plumbing contractor license. Plumbing contractor licensing is handled at the municipal level. However, plumbers must hold a valid Ohio Plumber's license (Journeyman or Master) issued by the Ohio Construction Industry Licensing Board (OCILB) for residential work, or a city-issued license for commercial work.

    Official government source

    $25–$75 (OCILB license)4–8 weeks

  2. Ohio Business Entity Registration (if applicable)

    LLCs and corporations must register with the Ohio Secretary of State.

    Official government source

    $99 (LLC filing fee)3–5 business days (online filing)

City of Columbus / Franklin County

2 stops

  1. City of Columbus Plumbing Contractor License

    The City of Columbus, Department of Building and Zoning Services, requires all plumbing contractors working within the city to hold a Columbus Plumbing Contractor License. A Columbus-licensed Master Plumber must qualify the contracting license. Exams are administered locally. The license must be renewed annually.

    Official government source

    $100/year (contractor license)2–4 weeks (includes exam if needed)

  2. Columbus Business License / Vendor's License

    Businesses providing taxable services in Columbus must obtain a Vendor's License from the Ohio Department of Taxation. No separate city business license is required for contractors, but a vendor's license is needed if collecting sales tax on materials.

    Official government source

    $25 (one-time vendor's license fee)1–3 days

Terminus

Open for business — est. $500–$1,500 · 6–10 weeks to obtain all licenses and permits

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Official Sources

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