The Arizona Supreme Court recently clarified the definition of a "fortuitous loss" in insurance contracts, a ruling that could significantly impact how insurance claims are evaluated in the future. This decision arose from a dispute between Industrial Park Center, LLC, doing business as Mainspring Capital Group, and Great Northern Insurance Company (GNIC) regarding property damage claims. The court's ruling emphasizes the importance of the insured's knowledge at the time the insurance policy was issued.

The case, known as Industrial Park Center v. Great Northern Insurance, was filed under docket number CV-25-0330-CQ on September 1, 2026. The Arizona Supreme Court addressed a question certified by the United States Court of Appeals for the Ninth Circuit regarding whether damage to property can be considered a "fortuitous" loss when the insured was aware that such damage was likely to occur.

Background

The dispute centers around Industrial Park Center, which owns a commercial property leased to Star Fisheries, Inc. for over thirty years. During this time, Star Fisheries' operations, which involved significant water and salt usage, compromised the structural integrity of the building. Mainspring discovered damage to the property in 2010 and hired an engineering firm to assess the situation. The firm concluded that the damage was primarily due to Star Fisheries' cleaning practices.

Following the assessment, Mainspring amended its lease with Star Fisheries, making the tenant responsible for the remediation costs. However, Mainspring did not file a claim under its all-risk insurance policy with GNIC at that time. In 2021, further damage was discovered, prompting Mainspring to file a notice of loss with GNIC. GNIC denied coverage, stating the damage resulted from poor soil preparation and long-term corrosion, which fell under the policy's exclusions.

The Ruling

The Arizona Supreme Court ruled on the definition of a fortuitous loss, stating that such a loss is one that, to the best of the parties' knowledge, is dependent on chance. The court explained, "A loss is non-fortuitous only when the insured knew, at the time coverage attached, that the loss-causing event had already occurred, was already in progress, or was certain to occur because no material contingency remained between the facts known to the insured and the loss-causing event."

Justice Clint Bolick authored the opinion, with Chief Justice Timmer, Vice Chief Justice Lopez, and Justices Beene, Montgomery, King, and Cruz joining. The court's decision establishes a subjective standard, focusing on the insured's knowledge at the time of contracting. This means that if an insured was aware of a risk that was almost certain to lead to loss, that loss may not be covered under the insurance policy.

Impact

This ruling has significant implications for future insurance claims in Arizona. By establishing a clear definition of what constitutes a fortuitous loss, the court provides guidance for both insurers and insured parties. Insurers may now have a clearer framework for determining whether to deny claims based on the insured's knowledge of potential risks at the time the policy was issued.

The decision may also influence how courts interpret similar cases in the future, potentially setting a precedent for other jurisdictions. Insured parties will need to be more aware of their knowledge regarding risks at the time of policy issuance, as this will now play a crucial role in determining coverage.

What's Next

While the ruling provides clarity on the definition of fortuitous loss, it does not resolve the underlying dispute between Mainspring and GNIC. The case will likely return to the lower court for further proceedings based on the Arizona Supreme Court's guidance. Additionally, it remains to be seen whether GNIC will appeal the ruling or if there are related cases pending that could further explore the implications of this decision.