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New York District Court Confirms Insurance Coverage Must Mean Something

What You Need to Know

  • Key takeaway #1

    A federal district court in New York reformed an excess insurance policy, finding that enforcement of a residential-work exclusion would impermissibly have resulted in illusory coverage because it would have eliminated coverage for the entirety of the insured’s work.

  • Key takeaway #2

    The decision reinforces the fundamental principle that insurance policies must provide coverage to policyholders; insurers cannot enforce exclusions that result in policies providing no effective protection to their insureds, particularly where the insurer knew the nature of the policyholder’s business when issuing the policy.

Client Alert | 4 min read | 02.04.26

Background

In GuideOne National Insurance Co. v. Systems 2000 Plumbing Service, Inc., the U.S. District Court for the Southern District of New York addressed whether excess insurer GuideOne was required to provide coverage under a “follow form” excess policy based on mutual mistake or illusory coverage principles. The insured, Systems 2000, is a plumbing contractor that worked exclusively in residential apartment buildings. It held a $2 million primary general liability insurance policy with Travelers and a $4 million excess insurance policy with GuideOne, both of which were effective March 15, 2021. Eight days later, there was a fire in a Manhattan apartment building where Systems 2000 had been performing work. Systems 2000 made timely claims under both policies for coverage related to the fire.

The Travelers policy contained a residential-work exclusion that purported to preclude coverage for any work on residential condominiums or any residential apartments, but the text of the exclusion was never provided to Systems 2000 and the only reference to the exclusion was “confusingly worded.”[1]After the fire, Travelers initially denied coverage based on this exclusion, but subsequently reformed the policy by removing that exclusion. GuideOne — the excess carrier — maintained, however, that it had no coverage obligation based on the residential-work exclusion, and it denied System 2000’s claim. GuideOne brought a declaratory judgment action seeking a declaration that it had no coverage obligation.

The Illusory Coverage Holding

Under New York law, insurance coverage is illusory where the insured purchases “no effective protection.”[2]Here, following denial of cross motions for summary judgment, the district court articulated the dispositive question at trial as “determining whether enough of Systems 2000’s work was residential such that a commercial-only policy would be illusory, and whether GuideOne was actually aware of those facts when it issued the Excess Policy.”[3]

Critical Findings

The court made two key factual findings:

  • Nature of Systems 2000’s work: The evidence clearly and convincingly established that “all of Systems 2000’s work was performed in residential buildings” — condominiums, co-ops, and apartment buildings in New York City. Given its plain language and breadth, the residential-work exclusion would necessarily have excluded coverage for all of Systems 2000’s work.
  • GuideOne’s knowledge: The court found by clear and convincing evidence that GuideOne knew Systems 2000 performed work in residential buildings and intended to provide coverage for that work when it issued the policy. GuideOne’s head of excess and surplus casualty testified that he intended to cover Systems 2000’s plumbing work in apartment buildings and would not have included a residential-work exclusion because that would have excluded coverage for Systems 2000’s entire operation and resulted in no coverage.

The Holding

The district court concluded that all of Systems 2000’s work was performed in residential buildings and that GuideOne knew that fact and intended to provide coverage for precisely that work. Enforcing the exclusion for residential work — which neither party intended — would result in the insured having purchased no effective protection and its coverage would therefore have been illusory.

The court held: “Because a residential-work exclusion would completely defeat coverage for Systems 2000 under the Excess Policy, enforcement of that exclusion results in illusory coverage, and accordingly, reformation of the Excess Policy is warranted on this ground.”[4]

Mutual Mistake

The court also found mutual mistake, concluding that clear and convincing evidence established both parties agreed to an excess policy providing coverage for Systems 2000’s work in residential apartment buildings, which was the entirety of its work.

Implications for Policyholders:

  • Exclusions that eliminate coverage for a business’s entire operations may be unenforceable as illusory
  • Evidence of the parties’ mutual understanding — including applications, correspondence, and underwriting documents — can support claims to reform the policy language to afford intended coverage
  • Insurers’ knowledge of business operations when issuing policies strengthens illusory coverage arguments, underscoring the importance of clear communication with the carrier during the unwriting process

Conclusion

The GuideOne decision reinforces that courts applying New York law will reform insurance policies to avoid illusory coverage where an insurer knowingly underwrites a policy for an insured whose work falls entirely within an exclusion. The decision serves as a critical reminder that policy language must provide meaningful coverage consistent with the parties’ mutual intent. If your insurance claim has been denied, resulting in illusory coverage, contact the Insurance Recovery team at Crowell so we can review your policy documents and evaluate your coverage position.

For more information, please contact:

Rachel V. Stevens
Senior Counsel
New York
rstevens@crowell.com
+1.212.590.5430

Josh Sohn
Partner
New York
jsohn@crowell.com
+1.212.590.5442

 

This Client Alert is a publication of Crowell & Moring LLP and should not be construed as legal advice or legal opinion on any specific facts or circumstances. The contents are intended for general informational purposes only.

 

[1] GuideOne National Insurance Co. v. Systems 2000 Plumbing Service, Inc., 22-CV-5018, 2025 WL 3707410, at *1 (S.D.N.Y. Dec. 22, 2025).

[2] Id. at *11.

[3] Id. .

[4] Id.

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