Indiana Plumbing License: What Applies and What Does Not

Does a plumbing business need a license in Indiana?

Indiana issues 5 license classes for plumbers.

Indiana licenses plumbing statewide through the Indiana Plumbing Commission, part of the Indiana Professional Licensing Agency. Individuals hold the apprentice, journeyman and plumbing contractor licenses, and a corporation engaged in plumbing contracting holds its own contractor license.

The plumbing business itself must be licensed or registered, not only the people doing the work.

A corporation in the plumbing contracting business must itself be licensed as a plumbing contractor, and to qualify for the corporate license the applicant must already hold an Indiana Plumbing Contractor license. A business filing a certificate of assumed business name must also register that name, address and telephone number with the commission.

This records what Indiana publishes, not a determination about your business. Scope, thresholds and local requirements are set by the issuing body, so confirm with them before you bid or file.

Verified 2026-09-03 against the primary source listed under Sources.

What the LLC has to do first

Several states license the plumbing company separately from the individual plumber, so the LLC and the license are two filings, not one.

The entity filing is separate from anything the license requires. In Indiana it is made with the Indiana Secretary of State. File directly with the state here. The order matters wherever the license is issued to the company rather than to a person: the entity has to exist before an application can name it.

Forming an LLC as a plumbing business in Indiana covers the filing itself, step by step.

Insurance Indiana plumbers are asked to show

Plumbing license and registration schemes commonly require proof of general liability cover, and water damage from a failed connection is the claim these policies are bought for.

We do not publish Indiana premium figures for this trade, so nothing here is a quote. Our business insurance guide for plumbers covers what each policy does and does not pay for.