Buying in the Hamptons has never been more affordable. In late 2025, The average selling price reached a record $2.34 millionwith sales of more than $10 million, up 75 percent from the previous year. On paper, one of America’s most climate-vulnerable luxury markets has never looked stronger, even as the risks behind it continue to grow.
The same coastline looks very different when viewed through the eyes of an insurance broker. National and regional carriers have stopped writing new coverage for homeowners in eastern Suffolk County, and increasingly across Long Island. “In terms of underwriting, this is the worst market I’ve ever encountered,” says Dermot Dolan of Hamptons Risk Management in Bridgehampton, a 30-year industry veteran. He told the Southampton newspaper in November 2024. New York’s temporary gap, the Coastal Market Assistance Program (C-MAP), now serves as a last resort for homeowners whose insurance coverage has been withdrawn by carriers. Data from the Senate Budget Committee Published December 2024 Trend detection. Of the 100 U.S. counties with the highest rates of home insurance not renewing in 2023, 82 were coastal or wildfire-prone. The underlying message couldn’t be clearer. Climate risks are no longer hypothetical, and insurers are increasingly voting by repricing in – or withdrawing from – the markets most at risk.
At first, record prices coupled with the disappearance of insurance may seem contradictory. However, this view ignores the underlying dynamics. Insurance typically shapes real estate markets through stringent mortgage requirements. Under normal circumstances, lenders require coverage, insurance premiums dictate home affordability costs, and uninsured homes simply cannot be financed. In the Hamptons, this mechanism has been completely bypassed. Driven by Wall Street wealth, the ultra-luxury market exists Thriving with all cash deals From buyers with cash flow. Without a lender, the insurance mandate disappears from the deal and becomes the buyer’s sole responsibility. The physical danger remains. It was simply privatized.
This migration is now evident in the way some of the country’s largest private fortunes manage coastal properties. Donald Poster, who leads the Aon Family Office practice, described: These are the new rules of the game for Crain Coin. Households with older, unmortgaged properties buy $20 million or $50 million of coverage on a $100 million home and use their own liquidity to self-insure the rest. Hard-line measures that were once simple recommendations are now what underwriters call “topics,” that is, mandatory conditions of coverage. Parametric policies, which pay upon a trigger event rather than an adjusted claim, are only applicable when there is no lender to object to. Erosion, the risk that defines every coastline, is gradual and completely uninsurable. There is a cap even for the largest balance sheets. Spending $1 million a year to secure a $100 million home is a scenario where many people will shy away from purchasing, a poster noted.
Look closely at this playbook, and a familiar institution comes into focus. Underwriting judgment, risk engineering, disaster response, and even previously established special firefighting capability are functions of the insurance company, which are being repackaged within a family office. Transport companies did not stop performing these functions because the danger had passed. They repriced risk, and owners who could afford it took those jobs in-house.
The broader market is adopting similar strategies. Main carrier It came out nationwide High-net-worth private client segment in 2023. And in California, the Surplus Line Association An increase of 119 percent was recorded In homeowner transactions in the surplus lines market, where pricing is unregulated and coverage is discretionary, during the first half of 2025. Description of Swiss Re’s 2026 Sigma Report Increase in insured losses as they are structural and not periodic. This shift occurred not because coastal areas suddenly became more dangerous, but because risk models now reflect actual conditions. When risks become visible, they are priced and must be absorbed. This process ultimately shifts climate risks from corporate pools to individuals. The Hamptons embodies this trend perfectly. It is where this massive transfer of risk is most evident, but least evident in property prices.
For families with coastal assets across generations, the calculations below are uncomfortable. First Street analysis for February 2025 Net property value losses in the United States are expected to reach $1.47 trillion by 2055 due to insurance costs and changing exposure to demand repricing, with 84% of neighborhoods affected to some extent. The period home is kept for 50 years and is guaranteed for 12 months at a time. The gap between these two hours was a theme Yale Law Review December 2025 article About the climate threat to property insurance, which is why insurance is now on the agenda of the family office investment committee and not on the property manager’s agenda. What assets does the family self-guarantee, to what loss limit, and how much capital is held against the answer? What is the cost of hardening, and what does it return in premium and insurability? What assets does the next generation actually want to inherit, as well as their risks? These are capital allocation questions, and the households that answer them most quickly treat adaptation spending as an investment rather than a cost. He loves Norges Bank Investment Management – the world’s largest sovereign wealth fund –Natural hazards approachThey view resilience as a prerequisite for long-term return rather than as a gesture towards them.
This is beginning to change the meaning of wealth management. For a generation, that meant asset distribution, taxes, and succession. The next version adds insurability as a fixed column, kept next to liquidity and yield, because assets that cannot be insured cannot be owned or transferred reliably. The heir now inherits the IPO with the deed. It is families that treat this file as a wallet income rather than a household expense that are most likely to still be holding the Coast in 30 years.
The insurance industry has spent forty years ensuring that coastal conditions are assumed to return to a predictable baseline. As I am He wrote to The Observer in MayBut this assumption has been abandoned by the institutions that price it, from reinsurance companies to sovereign capital. What the East End shows is the same retirement that amounts to private wealth. The Hamptons’ record prices are not evidence that capital is inconsistent with insurance company valuations; Instead, they show how these valuations are absorbed in a market that is liquid enough to deal with them privately. For decades, buyers have focused on the value of the property at closing. Now, the crucial question is who bears the risks when insurance companies do not. In the East End, this responsibility has become an integral part of the act.
