General liability insurance for plumbers

Water damage and completed operations

Water is the plumber's signature liability. A dripping fitting rarely announces itself. It soaks a subfloor, a ceiling or a wall cavity until somebody notices a stain, and by then the damage has spread well past the pipe. That's why the completed operations part of your GL deserves more attention than any other line on the policy.

"Completed operations" is the coverage for injury or damage that shows up after you've finished a job and left. On standard ISO forms it isn't an add-on. It's built into the policy unless an endorsement removes or limits it.

When your work counts as finished

The standard policy treats your work as complete at the earliest of three points:

• all the work in your contract is done
• all the work at that job site is done
• that part of the job has been put to use by someone other than another contractor on the project

Work that may still need a callback or a correction still counts as finished. So the bathroom you trimmed out on Friday is completed work on Saturday morning, even if you're coming back to swap a faulty cartridge.

A separate limit for finished work

On a standard policy, completed-operations claims draw from their own aggregate limit, separate from the general aggregate that pays on-the-job claims. Check your declarations page for the "products-completed operations aggregate" so you know how much is set aside for the work you've already walked away from.

Some states care about this directly. Maryland's master plumber insurance rule requires liability coverage that includes completed operations, so a policy that cuts it out won't satisfy the license. See Maryland plumber insurance.

Keep coverage in force behind you

Because GL is usually triggered by when the damage happens, the policy in force that day is the one you need. If you let coverage lapse, or switch carriers with a gap, a leak from a job you did two years ago can land in a month when nothing responds. Retiring owners and shops that sell out should ask about this before they cancel.

Example claim scenarios

These are illustrations, not real claims.

The press fitting that held for eight months

Example scenario: A crew roughs in a second-floor laundry in a new townhome. One press fitting never got fully crimped. It holds through the pressure test and through move-in, then separates eight months later and runs through the kitchen ceiling below. The homeowner's insurer pays and then comes after the plumbing contractor. The contractor's completed operations coverage may pay for the ceiling, cabinets and floors, while the cost of repressing the fitting likely stays with the shop.

The water heater that rolled

Example scenario: A tech hauls an old 50-gallon tank out of a tight garage on a hand truck. The strap slips, and the tank tips into the customer's parked car, cracking a door panel. This is ongoing-operations property damage to something the plumber wasn't working on, the kind of claim GL is built to consider.

The torch in the wall cavity

Example scenario: A tech sweats a copper repair inside an open wall and doesn't spot smoldering insulation behind the stud bay. Hours later, smoke damages two rooms. The burned framing and the smoke cleanup are third-party damage. The section of pipe the tech was repairing is a different question under the policy's "that particular part" exclusions.

How much plumber liability insurance you need, and what it costs

A common small-contractor setup is $1 million per occurrence and $2 million aggregate. That's the typical plumber policy in published industry data. "Per occurrence" caps what the policy pays on one claim, and the aggregate caps the policy year.

Commercial GCs, property managers and cities often write higher limits into their contracts and permits. Most plumbers meet those by adding an umbrella policy on top of GL instead of buying a bigger primary limit.

Your price depends on payroll, revenue, claims history, the work you do and the limits you choose. Sewer and excavation work, new construction and past water claims tend to push the number up. For every coverage side by side, see what plumber insurance costs. Get a quote for your plumbing business →

Which plumbing businesses lean on GL hardest

Every plumbing shop needs general liability, but the pressure points differ by the work.

• Residential service and repair. You're inside occupied homes every day, around finished floors and furniture. Water and completed operations dominate. See residential plumber insurance.
• Commercial and new construction. The GC's contract decides your limits and endorsements, and finished work sits in buildings with many tenants. See commercial plumbing contractor insurance.
• Drain, sewer and septic. Underground work, sewage and old pipe bring the XCU, pollution and "that particular part" issues to the front. See drain and sewer contractor insurance.

General liability requirements by state

Many states make general liability part of the license. The minimums are usually far below what a GC will ask for, so treat them as a floor. A few examples from our licensed states:

• Texas. A master plumber acting as Responsible Master Plumber must file proof of at least $300,000 in general liability, and cities check it before issuing permits. Texas plumber insurance
• Illinois. Plumbing contractor registration requires a certificate showing at least $100,000 per occurrence and $300,000 aggregate for bodily injury, plus property damage coverage. Illinois plumber insurance
• Kentucky. State law requires at least $250,000 of general liability to engage in plumbing.
• Ohio. Licensed contractors must show at least $500,000 of contractor liability insurance. Ohio plumber insurance

Other states set no license minimum at all and leave it to cities and contracts. Rules change, so confirm with your state board. Our state pages list the current rule and our license number in each state. Get a quote for your plumbing business →