Plumbing contractor insurance in Indiana

Plumbing licenses from the Indiana Plumbing Commission

The Indiana Plumbing Commission, part of the Professional Licensing Agency (PLA), licenses plumbers statewide. Forms and fees are on the PLA plumbing page.

License types include:

• Apprentice, age 17 or older and enrolled in an approved program
• Journeyman, after a four-year apprenticeship or with an out-of-state license
• Plumbing contractor, with four years of apprenticeship, trade or business experience
• Plumbing corporation, which must name a responsible licensed plumbing contractor
• Temporary plumbing contractor, issued after a licensee's death or disability in six-month steps, up to two years

Apprenticeship schools have to give a practical exam with copper, cast iron and plastic pipe projects, so plumbers coming out of those programs have handled all three.

The temporary license matters if your shop runs on one person's license. If the license holder dies or becomes disabled, it can keep the business operating for up to two years while you sort out what's next.

The PLA licensing page lists no insurance or bond requirement for a plumbing license. We couldn't confirm the full statute, so check with the commission before you rely on that. We also couldn't verify city registration rules in places like Indianapolis and Fort Wayne, so ask the permit office in each city you work.

Indiana workers' comp and the exemption certificate for subs

Every employer covered by Indiana's Act must insure or qualify to self-insure, unless a specific exemption applies. Owners can file a Coverage Election Notice (WCB form 36097) with the Worker's Compensation Board.

Subs are where Indiana differs. An independent contractor who doesn't carry comp can get a certificate of exemption. It first needs a clearance from the Department of Revenue, then files the certificate with the Board.

Here's why that matters to you:

• Collect a copy. A plumbing shop that hires an uninsured sub must get a copy of the sub's stamped certificate (IC 22-3-2-14.5).
• It protects you. Once you have it, the certificate holds your shop and your comp carrier harmless for that sub.
• Your carrier must honor it. The carrier has to accept it the same way it accepts a certificate of insurance.
• Timing counts. The certificate takes effect seven business days after the Board file-stamps it.

So a sub who files on Monday isn't covered by that exemption on Tuesday. Hold the start date until the certificate is in effect, and keep the stamped copy in the job file. Make it part of onboarding, the same as a W-9. At your premium audit, it's the document that keeps an uninsured sub's pay from landing on your payroll. Our guide to workers' comp for plumbing subcontractors covers the audit side.

Example scenario: A Fort Wayne shop brings in a one-man drain cleaning outfit to help with a backlog of main-line calls. The sub says his exemption is "in the works," and he starts that week. On day three, he slips on a wet basement stair and tears a knee ligament. With no stamped certificate in the shop's file, the injury can land on the shop's comp policy, and the sub's pay can show up on the next audit.

The Board can also ask any employer for proof of coverage. If you don't send current proof within 10 days, it can assess $100 a day until you comply. The penalty is waived if you provide proof within 20 days of the notice.

Keep a current certificate where your office can find it fast. Read our workers' comp guide for plumbers for how the premium is built. Get a quote for your plumbing business →

Sewers, rivers and old housing in Indiana

Combined sewers and backups

Older Indianapolis neighborhoods run on combined sewers, and raw sewage has backed up into homes. The DigIndy tunnel system, 28 miles long and about 200 feet down, holds 250 million gallons and was built from 2011 to 2025 to curb overflows.

Backup calls put your techs in contact with sewage. Standard GL has a pollution exclusion, and whether sewage counts as a pollutant depends on the policy wording and the courts. Contractor pollution liability is the usual way to close that gap. Ask whether a policy covers sewage cleanup and bacteria, because forms differ.

Aging homes in the northern cities

South Bend has 60% of its housing from before 1960 and 30% from 1939 or earlier. In Fort Wayne, 62% predates 1980.

That means cast iron, galvanized supply and old laterals, plus water damage risk on every repair. A failure after you've left is a completed operations claim, meaning damage that shows up after the job is done. Most general liability policies include it, subject to their terms.

The Ohio River

In the 1937 flood, the Ohio River crested at a record 53.74 feet at Evansville, 19 feet above flood stage.

Shops near the river should think about where vans and equipment sit overnight. A jetter trailer and a camera rig can be worth more than the van that tows them, and a flood doesn't care which policy they're on. Loose tools usually aren't covered by a commercial auto policy, so a tools floater does that job.

Indiana plumbing markets we serve

Plumber insurance costs in Indiana

Indiana is one of the cheaper states for comp. Oregon's 2024 ranking puts its all-industry index at $0.71 per $100 of payroll, 45th of 51 and 65% of the median. That's a broad index, not a plumbing rate.

What moves your bill more is how you handle subs. Uninsured subs without a valid exemption on file can end up on your audit, and that can turn a low rate into a surprise bill. A shop that collects every certificate before the first shift usually has a calmer audit than one that chases paperwork afterward.

We shop Indiana accounts with several carriers and compare how each handles sewer work, sub-heavy payrolls and older-home service. Appetite for that mix isn't the same from one carrier to the next. Sewer work can add a pollution policy, and older-home service work affects how carriers view your liability.

Your price depends on payroll, revenue, claims history, the work you do and the limits you choose. See ranges in our plumber insurance cost guide. Get a quote for your plumbing business →

Our Indiana license

Plumbing Insurance Group is a brand of The Allen Thomas Group, licensed in Indiana (License #837378, NPN 7642818). We quote Indiana plumbing contractors and plumbing corporations statewide, and we can review your sub certificates as part of the quote.