Plumbing Contractor Permit Requirements in Indianapolis, IN

Complete permit and license guide for starting a plumbing contractor in Indianapolis, Marion County, Indiana.

$400 -- $1200 4–10 weeks to obtain all licenses 5 requirements

Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .

Indianapolis / Marion County Requirements

3 requirements
1

Indiana Plumbing Commission — Master Plumber License

All plumbing contractors in Indiana must hold a Master Plumber License issued by the Indiana Plumbing Commission. Requires 4 years of apprenticeship and passing a state exam.

$100 (initial)4–8 weeks
Official government source
2

Indianapolis Department of Business and Neighborhood Services — Business License

Indianapolis (Marion County) requires a Commercial Zoning Certificate and may require a Business License depending on the business type. This license must be renewed annually and displayed at your place of business.

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

Marion County / Indianapolis 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.

$50–$300 per project1–5 business days
Official government source

Indiana State Requirements

1 requirement
1

Indiana Department of Revenue — Registered Retail Merchant Certificate

Required for all businesses selling tangible personal property at retail in Indiana. Indiana charges a flat 7% state sales tax with no additional local sales tax. Register online via INBiz.

$25 one-time registration feeImmediate (online via INBiz)
Official government source

Federal Requirements

1 requirement
1

EIN (Employer Identification Number)

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

FreeImmediate (online application)
Official government source

Official Sources

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