$11.2 Trillion in Home Value Is Now on the Climate Risk Table

A new analysis published July 23, 2026 puts a hard number on a problem sellers can no longer afford to ignore: $11.2 trillion in U.S. residential real estate is exposed to at least one category of severe or extreme climate risk, including wind, flood, and wildfire. The figure comes from Realtor.com's research team, which also found that roughly 23% of American homes—nearly 1 in 4—carry elevated disaster risk.

The timing matters. Insurance premiums are rising sharply in high-risk markets, and a growing number of homeowners are responding by dropping coverage entirely. That decision can look like a cost-saving move right up until a storm or fire makes it catastrophic. For sellers, the ripple effects reach straight into buyer behavior, appraisals, and deal financing.

How Insurance Erosion Is Quietly Undermining Home Values

The financial architecture that has long propped up home values in risky areas is developing serious cracks. The National Flood Insurance Program—which writes more than 90% of all residential flood policies in the country—has seen its active contracts shrink by roughly 170,000 between May 2025 and May 2026. States that dropped the hardest include Texas, down 7.8%, and Oklahoma, down 6.9%. Mississippi, Idaho, and Alabama each shed more than 6.5% of their NFIP contracts over the same period.

This isn't just a policy wonk concern. Fewer insured homes in a neighborhood means more financial fragility across the block—and lenders are paying attention. Mortgage delinquency rates in climate-exposed states are running well above the national average of 0.8%. Louisiana reached 1.7% and Mississippi hit 1.4% as of September 2025. Texas and Florida are tracking similar patterns. When neighbors can't make payments after a disaster, it pressures surrounding property values, including homes that weren't directly damaged.

HOA fees are another pressure point that sellers often overlook. Realtor.com's analysis found that the median monthly HOA fee for homes in severe or extreme climate risk zones runs $192—that's $67 higher, or 53.6% more, than fees in lower-risk areas. Buyers calculating total monthly costs will notice that gap.

Seller Disclosure Is Becoming the Central Legal and Market Issue

The Realtor.com report is direct on this point: early climate risk disclosure is the clearest way to ensure buyers make informed decisions before problems become financially unmanageable. What that means practically for sellers is that hiding, downplaying, or simply not knowing your property's risk profile is an increasingly dangerous position to be in.

Disclosure laws vary by state, but buyer sophistication around climate data is rising fast—and so is scrutiny from lenders and insurers who conduct their own risk assessments before committing to a transaction. A buyer who discovers post-closing that flood insurance has become unaffordable, or that wildfire risk wasn't surfaced, has grounds for dispute. More practically, deals fall apart when insurance quotes come back at numbers the buyer didn't budget for.

Congress is actively debating changes to federal flood insurance rules, including legislation that could prohibit coverage renewals for properties with repeated severe loss claims. If that reform passes, some homes in recurring-disaster zones could lose access to federally backed flood insurance entirely—a fact that would make those properties significantly harder to sell or finance.

Where Buyer Demand Stands Despite the Risk—and What That Means for Pricing

Here is the counterintuitive part: buyer traffic in high-risk markets hasn't collapsed. Realtor.com tracked online home-search behavior in California after the Eaton and Palisades wildfires—events that caused property and capital losses estimated between $76 billion and $131 billion. Within a month, buyer views of homes in severe- and extreme-risk zones had rebounded to pre-fire levels. A month after that, traffic increased further.

The explanation is affordability pressure. In expensive coastal and Sun Belt markets, many buyers feel they have no viable alternative. They are making a calculated bet—or, in some cases, an uninformed one—that the risk is manageable or someone else's problem.

For sellers, that dynamic creates a narrow window. Demand is still present, but the underlying conditions—rising premiums, shrinking insurer participation, increasing delinquencies—are not stabilizing. Sellers who act while buyer traffic remains active, rather than waiting for market conditions to force their hand, are in a structurally stronger negotiating position. That is especially true in markets where Tornado Alley's eastward shift is putting previously low-risk communities into new exposure categories, often without local buyers or sellers fully recognizing the change.

What Sellers in Risk Zones Should Do Before Listing

Start with an honest inventory of your property's risk profile. Pull your current insurance declarations page and find out what your coverage actually costs relative to comparable homes in lower-risk zip codes—that gap is information a serious buyer will obtain anyway. If you're in a flood zone, check your NFIP policy status and whether it is transferable; an assumable flood policy at a locked-in rate can be a genuine selling point in a market where new policies are expensive or scarce.

Get ahead of disclosure requirements rather than waiting for your agent or attorney to prompt you. Proactive disclosure of known risks, paired with documentation of any mitigation measures you've taken—upgraded roofing, flood vents, defensible space landscaping—positions you as a trustworthy counterparty rather than someone with something to hide.

Finally, price with the insurance reality in mind. A buyer who falls in love with your home but gets a premium quote they can't absorb will either renegotiate or walk. Building a realistic insurance cost estimate into your pricing conversation from the start leads to cleaner offers and fewer surprises at the finish line.

If you want a fast read on what your home would net in a direct sale—without the exposure of a lengthy listing period in a shifting market—our instant-offer tool can give you a same-day figure to benchmark against.