No Prejudicial Error in Refusing to Give Jury Instruction on Predominant Cause

    The California Court of Appeal affirmed the trial court's judgment after the jury determined there was no coverage for a leaking pipe. Mendoza v. Pacific Spec. Ins. Co., 2024 Cal. App. Unpub. EXIS 5477 (Cal. Ct. App. Aug. 20, 2024).

    The Mendoza's third amended complaint alleged their home was damaged "by overflow of water from the dwelling's plumbing system resulting from a broken pipe, which overflow undermined the structural integrity of the dwelling." 

    The Mendozas insured their home under a policy issued by Pacific. The policy insured the property against "sudden and accidental direct physical loss" except where expressly excluded. The Mendozas submitted a claim Pacific paid approximately $1800 for the loss and closed the claim. The amount paid did not include payment for any structural damage to the home. The Mendozas alleged that Pacific's failure to conduct a full and fair investigation into the structural damage and its inadequate payment of benefits was a breach of the implied covenant of good faith and fair dealing. 

    At trial, the Mendozas argued that a drainpipe, after "deteriorating for 100 years," collapsed in on itself, resulting in a blockage of the pipe which caused a significant amount of water to be diverted under their house. The claimed that as a result of the soil saturation, the foundation of the house was undermined causing significant structural damage.

    Given the evidence at trial, a reasonable jury could not have found that there was a sudden discharge of water from the pipe. Thus, the failure to give the instruction was not prejudicial because the jury would not have reached the question of predominant cause. The evidence established that the hole in the pipe developed over time and also that water had been leaking from other parts of the pipe as well. No evidence was presented as to when the hole in the pipe formed but nothing indicated that it was the result of an abrupt event, 

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    Absent a finding of a covered loss, the jury would not have reached the efficient proximate cause instruction. Accordingly, the failure to instruct on the efficient proximate cause rule was harmless. The judgment was affirmed. 

    Pacific disputed the Mendozas' claim that the damage was caused by a sudden break in the pipe, arguing instead that any water that accumulated was from an ongoing leak in the pipe caused by deterioration coupled with a backup resulting from a clog. Pacific further argued that the structural damage was caused by, among other things, water from other sources, faulty construction, faulty maintenance, and historic subsidence, none of which were covered perils under the policy. 

    The jury found the Mendozas's loss was not covered. The Mendozas appealed, challenging the jury instructions and failure to instruct the jury on the efficient proximate cause doctrine. 

    On appeal, the court noted that when the evidence showed the loss was occasioned by only a single case, the efficient proximate case analysis was not applicable. The Mendozas wanted the jury to be instructed that "when a loss is caused by a combination of covered and excluded risks under the policy, the loss is covered only if the most important pr predominant cause is a covered risk." The Mendozas argued the instruction should have been given because a reasonable jury could have concluded on the evident that "the pipe deteriorated over many yeas and ruptured suddenly, and/or the pipe ruptured and further release thereafter was due to a backup, and/or the pipe ruptured suddenly, causing compaction of the soils and structural damage, and the loss was caused in part by the in compacted condition of the soils." 

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    The court agreed that only the third scenario, in theory, could implicate the efficient proximate caused doctrine. The discharge of water from the pipe and the other identified causes were distance perils. It was unnecessary, however, to decide whether there was sufficient evidence to support the giving of the instruction because omission of the instruction, if error, was not prejudicial. Absent a finding of a covered loss, the jury would not have reached the efficient proximate cause instruction. Accordingly, the failure to instruct on the efficient proximate cause rule was harmless. The judgment was affirmed.