Completed Operations Coverage for Plumbing Contractors

The short version

A commercial general liability (CGL) policy divides the world into two hazards. Premises/operations is injury or damage that happens while you are working. Products-completed operations is injury or damage that happens after the work is done and you have left, or after it has been put to use. The distinction matters to a plumber more than to almost any other trade, because plumbing work fails slowly: a cross-threaded connector holds under test and lets go in a month, a solder joint weeps for a year behind drywall, a water heater relief line drips into a subfloor until the subfloor is gone. By the time the damage is discovered, the plumber is long gone and the loss is a completed-operations loss.

That makes two things true. First, a plumbing company's general liability policy is only as good as its completed-operations coverage, and an endorsement removing or sublimiting it hollows the policy out. Second, because the standard form is an occurrence policy, the policy that responds is the one in force when the damage occurred, which may be several policies ago. The continuity of your coverage history, and the endorsements on each policy in it, determine whether a claim from a job finished years earlier lands on an insured or an uninsured period.

A realistic scenario

This is a hypothetical. A plumbing contractor in the Inland Empire installs a tankless water heater and a recirculation loop in a hillside home in Riverside in March. The company switches general liability carriers at its July renewal, moving to a cheaper policy that, on close reading, carries a prior completed operations exclusion with a retroactive date of the new policy's inception.

The following February, eleven months after the installation and seven months into the new policy, a compression fitting on the recirculation return fails inside a wall. The homeowners are away for ten days. Water runs down through the lower-level family room and into the crawlspace. The homeowners' carrier pays about $87,000 for drying, demolition, flooring, cabinetry and contents, then subrogates against the plumbing company.

Under a standard occurrence form the policy in force when the damage occurred is the one that responds, which would be the new carrier. The new carrier points to its prior completed operations exclusion: the work was completed before the retroactive date. The old carrier points out that no damage occurred during its policy period; the fitting was dry on the day the policy expired. The plumbing company is standing between two carriers, each with a defensible position, on a claim that would have been routinely covered had the company renewed the old policy, or bought the new one without that endorsement. Whether the fight ends with a coverage position, a compromise or a judgment, the company is paying lawyers for a problem that was created by one endorsement at renewal.

How the coverage is built

The products-completed operations hazard

On the standard CGL form, the products-completed operations hazard includes bodily injury and property damage occurring away from your premises and arising out of your product or your work, except products still in your physical possession and work that has not yet been completed or abandoned. Work is generally deemed completed at the earliest of: when all the work in the contract is done; when all the work at a particular site is done, if the contract covers more than one site; or when the part of the work out of which the injury or damage arises has been put to its intended use by someone other than another contractor or subcontractor working on the same project. Work that needs service, maintenance, correction, repair or replacement but is otherwise complete is treated as completed.

For a plumber the practical reading is usually simple. Once the homeowner is using the fixture, that part of the work is generally complete, and damage it causes afterward is a completed-operations loss. If you come back to work on it, damage arising from that return visit is generally an operations loss again.

Why so many plumbing losses are completed operations

Plumbing's characteristic failure modes are delayed. Connections that pass a pressure test can fail under thermal cycling, water hammer or vibration weeks later. Slow leaks are invisible until they are not. Sewer and drain work fails when a joint settles or roots find it. Many of the claims that reach a plumbing contractor's liability policy are claims from work the company finished and walked away from, and the long tail between completion and discovery is exactly what completed-operations coverage exists for. A GL quote that is cheaper because products-completed operations is excluded, sublimited or written on a separate aggregate of a small amount is cheaper because it has removed the coverage a plumber actually uses.

Occurrence versus claims-made

Most contractor general liability is written on an occurrence form: the policy covers bodily injury or property damage that occurs during the policy period, regardless of when the claim is made. A leak that occurs in year three of a job's life is covered by whichever policy was in force in year three, even if the claim is first made in year five. One California refinement: for damage that is continuous or progressively worsening, such as a slow leak that rots a subfloor over two years, the California Supreme Court applies a "continuous injury" trigger, so every occurrence policy in force while the damage was happening is potentially triggered (Montrose Chemical Corp. v. Admiral Ins. Co., 1995). That is why old policies never stop mattering, and why the file of every policy you have ever carried belongs in a fireproof cabinet and a cloud drive.

A claims-made form, by contrast, covers claims first made during the policy period (and typically arising from acts after a retroactive date). Claims-made forms are uncommon for contractors' general liability and should be approached with care, because moving from claims-made to occurrence, or letting a claims-made policy lapse without an extended reporting period, can leave past work entirely uninsured. If a quote is claims-made, ask why.

The outer boundary of this exposure in California is set by two statutes that run from substantial completion of an improvement to real property, and they apply to those who construct the improvement, which includes trade contractors. Code of Civil Procedure §337.15 bars actions for property damage from a latent deficiency (one "not apparent by reasonable inspection") brought more than ten years after substantial completion; §337.1 sets four years for patent deficiencies, with a limited extension when injury occurs in the fourth year; the four-year rule does not apply to an owner-occupied single-unit residence, which describes many service customers. Under §337.15, substantial completion is measured separately for each trade, and is no later than the earliest of final inspection, a recorded notice of completion, use or occupation of the improvement, or one year after work stops. The ten-year limit does not apply to actions based on willful misconduct or fraudulent concealment, and whether a small service repair counts as an "improvement" is a fact question for a lawyer. The statutes limit how long a claim can be brought; they do not shorten the policy's obligation for damage within its period. From an insurance standpoint, the lesson is that construction work can carry up to a decade of exposure, and the occurrence policies in force during those years are the ones that answer.

Aggregate limits

The standard CGL form has two aggregate limits. The general aggregate caps what the policy pays in total for premises/operations and most other coverages during the policy period. The products-completed operations aggregate is a separate cap for completed-operations claims. Each occurrence is also capped by the per-occurrence limit. A common structure is a per-occurrence limit with aggregates at twice that amount, and contracts generally require that the products-completed operations aggregate be shown and meet a stated minimum.

Two things to check on the declarations page. First, that a products-completed operations aggregate is shown at all; a blank, a dash, or the word "excluded" is a warning. Second, that it is not sublimited below the general aggregate. For a plumbing company doing a reasonable volume of work, the completed-operations aggregate is the number most likely to be eroded by two or three water losses in one year.

What happens when you cancel or switch

Switching carriers

On a clean switch between two occurrence policies without prior work exclusions, there is no gap: damage occurring before the switch belongs to the old policy, damage occurring after belongs to the new one, regardless of when the work was done. The gap opens when the new policy carries a prior work, prior completed operations or retroactive date endorsement, as in the scenario. Those endorsements are common in the contractor market, particularly on lower-priced policies, and they shift the risk of your entire completed-work inventory back onto you.

Before accepting a renewal with a new carrier, ask the question directly and get the answer in writing: does this policy exclude completed operations arising from work performed before its inception? If yes, the cheaper quote is not comparable, and How to compare plumbing contractor insurance quotes explains how to put the two on the same footing. Some carriers will remove the endorsement or move the retroactive date back for an additional premium; some will not. Either way, decide with the exposure in view.

Cancelling or winding down

An occurrence policy continues to respond to damage that occurred during its term after it has been cancelled or has expired. It does not respond to damage that first occurs after the term ends. A plumber who retires, closes the company or lets coverage lapse is therefore uninsured for any failure of past work that occurs after the last policy's expiration, for as long as the statute allows a claim to be brought. Some carriers offer a discontinued operations or tail policy for contractors winding down; ask about it well before the last renewal, because the market for it is thin.

Prior work exclusions and continuity of carrier

The cleanest protection against all of this is a continuous history of occurrence policies with no prior work exclusions, ideally with as few carrier changes as the pricing allows. Every change of carrier is a moment to read the new endorsements against the old. Plumbing contractor insurance exclusions you should understand covers the prior work exclusion alongside the other endorsements that narrow a contractor's policy.

Certificates that require completed operations

General contractors, property managers and public owners routinely require a certificate of insurance showing the products-completed operations aggregate, and many require that the additional insured endorsement extend to completed operations as well as ongoing operations. The distinction matters: the standard ongoing-operations additional insured endorsement stops protecting the GC once your work for it is completed, while the completed-operations version applies to injury or damage within the products-completed operations hazard, subject to the policy remaining in force. Contracts frequently require the completed-operations additional insured status to be maintained for a number of years after completion, which means your future renewals have to keep including it. Certificates of insurance and additional insured requirements for plumbers walks through the forms.

If your policy excludes or sublimits completed operations, you cannot issue a compliant certificate, and a careful GC's compliance desk will catch it. That is the commercial, as opposed to the loss, consequence of the gap.

Practical takeaway

1. Read the declarations page for the products-completed operations aggregate and confirm it equals the general aggregate.
2. Confirm the form is occurrence and read the completed-operations definitions with your broker once.
3. Search every endorsement for prior work, prior completed operations and retroactive date language, especially on a new carrier's quote.
4. Keep every policy forever. Declarations, forms and endorsements, for every policy period. Old policies answer new claims.
5. Date and photograph your work, including the test performed, so a later occurrence can be placed in the correct policy period and the right carrier can be put on notice.
6. Make certificate compliance a check at renewal: can you still issue what your contracts require?
7. Plan the exit if you intend to wind the company down, and ask about discontinued operations coverage early.

For the Inland Empire contractor, the fitting was going to fail regardless. What turned a covered claim into a two-carrier dispute was accepting a renewal with a prior completed operations exclusion without asking what it did. The fix at the next renewal is to insist on a policy without that endorsement, or to price it in deliberately, and to keep the old policy's documents where they can be found.

When you request a quote, ask for the products-completed operations aggregate to be shown on the proposal and for any prior work or retroactive date endorsement to be identified up front. A licensed producer can tell you whether a cheaper quote is cheaper because of price or because of what has been removed.