Review enough affluent households’ insurance programs and a pattern emerges: the home is overinsured and the auto is underinsured. The misallocation is so consistent it deserves treatment as a phenomenon rather than a coincidence.
Start with the dwelling. It is common to open a policy and find $7 million of dwelling coverage on a home whose reconstruction cost is at most $3 million. The household pays thousands of dollars annually for limits that can never be collected, because property insurance is a contract of indemnity: it pays the cost of repair or reconstruction, not the stated limit. An inflated dwelling limit does not produce an inflated claim payment. It produces only an inflated premium. The overstatement usually traces to a valuation set years ago, escalated automatically, or anchored to purchase price rather than reconstruction cost.
Then open the auto policy. The same household frequently carries minimal or no uninsured and underinsured motorist coverage. UM/UIM is the provision that responds when the driver who injures you has no insurance or too little. Its importance rises with both road reality and household wealth. Uninsured drivers are common, and state minimum limits, where insurance exists at all, are trivially low against a serious injury. A household with significant assets and future earnings is exactly the household that cannot rely on an at-fault stranger’s policy to make it whole. Its own UM/UIM limit is frequently the only meaningful recovery available.
The asymmetry is striking. The overinsured dwelling line buys protection that contractually cannot pay out. The underinsured motorist line leaves genuinely exposed the scenario, serious injury caused by an inadequately insured driver, that produces some of the largest uncompensated losses in personal lines.
The remedy is a portfolio view. Insurance dollars should be allocated across coverages in proportion to exposure, not accumulated line by line through years of independent renewals. Trimming an inflated dwelling limit to a defensible reconstruction valuation and redirecting the savings into meaningful UM/UIM limits, and an umbrella above them, costs little or nothing net and materially improves the household’s position. The home is where the savings are. The road is where much of the danger is.
This article is adapted from Nathan’s original LinkedIn post, published March 13, 2025. Read the original post on LinkedIn →