$13 Trillion at Risk: Why Climate Resilience Must Start at Home

A new Realtor.com analysis estimates that more than one in four U.S. homes — representing $12.7 trillion in housing value — face severe or extreme climate risk. The number is staggering, but the implications are even larger: millions of families exposed to escalating hazards, shrinking coverage options, and rising premiums, and insurers navigating an increasingly fragile risk landscape.

Climate risk is not a future threat. It is materially reshaping housing markets, underwriting strategies, pricing structures, and policyholder expectations right now.

The question for insurers is no longer whether to respond, but how to build resilience where it matters most: the home itself.

The Expanding Exposure Across U.S. Housing

The Realtor.com findings reveal a sobering truth: climate-driven risk is embedded deeply in the national housing stock — and official maps chronically understate the threat.

Flooding

• Nearly 6 million homes (valued at $3.4 trillion) face severe flood risk over the next 30 years.
• Two million of these homes fall outside FEMA’s flood maps — which exclude heavy rainfall and climate-adjusted projections.
• In New Orleans, 66% of homes face severe flood exposure but lie outside FEMA flood zones.

This gap leaves homeowners — and insurers — operating on incomplete information.

Wind

• Roughly 18.3% of U.S. homes (more than $8 trillion in value) face severe or extreme wind risk.
• In high-risk metros like Miami, Houston, Tampa, and New Orleans, 100% of homes are exposed.

For homeowners, this means increasingly common hurricane deductibles that require $15,000–$20,000 out-of-pocket before coverage even begins.

Wildfire

• Another $3.2 trillion in housing value faces severe wildfire risk.
• California accounts for nearly 40% of exposure, but other regions — Colorado, Arizona, New Mexico, and parts of the Southeast — are rapidly catching up.
• In Colorado Springs, 75% of homes are exposed; in Tucson, 60%.

Compounding Risks

Many homes face multiple hazards — wind + flood, wildfire + drought, storm surge + erosion — magnifying the severity and emotional toll when disaster strikes.

The financial exposure is immense. The human exposure is even greater.

Insurance Markets Are Already Showing the Strain

Premiums are rising sharply in climate-affected regions, outpacing household income growth and reshaping affordability:

• Miami: Premiums average 3.7% of home value annually (~$22,000 per year).
• New Orleans: 3.6%.
• Cape Coral, FL: 2.2%.
• Top 100 U.S. metros average: 0.8%.

Even at these elevated levels, many households remain underprotected:

• Flood insurance is often a separate purchase.
• Wildfire coverage has been pulled back in high-risk regions.
• Wind deductibles increasingly leave families exposed to five-figure losses.

When risk is rising faster than coverage availability, both homeowners and insurers face systemic stress.

A New Lens on Climate Resilience

National infrastructure and policy responses matter — but resilience also begins at the individual property level, where small, targeted actions can transform outcomes.

Affordable, high-impact prevention includes:

• Clearing gutters to reduce water intrusion
• Maintaining drainage pathways
• Creating defensible space in wildfire zones
• Installing ember-resistant vents
• Securing outdoor items before wind events
• Testing sump pumps and backflow devices

These are not expensive upgrades. They are practical, evidence-based interventions that often determine whether a home suffers cosmetic damage — or becomes uninhabitable.

At scale, these actions stabilize loss ratios and preserve insurance affordability.

Technology + Human Support: The Prevention Engine

Advances in climate analytics, machine learning, satellite imaging, and AI-driven risk scoring have dramatically improved visibility into where risks are concentrated. But carriers face a gap:

• Insight doesn’t fix the home.
• Alerts don’t produce action.
• Models don’t reassure families.

AI can identify risks.

Humans turn those insights into action — through coordination, guidance, verification, and empathy.

Insurers need both.

This is the new “predict and prevent” model that leading carriers — including Nationwide, Allianz, Chubb, PURE, and Zurich — are increasingly embracing.

Where Rafter Fits In

Rafter provides carriers with a plug-and-play platform that turns climate-related risk awareness into real, measurable resilience at the property level.

Rafter delivers:

• Tailored home care plans based on each home’s vulnerabilities (flood, wind, wildfire, freeze, etc.)
• Guided preventive action — from maintenance tasks to risk hardening strategies
• In-home support and contractor networks so tasks actually get done
• Digital home baselines that document completed work and validate impact
• Year-round engagement that builds trust while reducing claims

This closes the gap between “we know the risk” and “the home is actually safer.”

For insurers, the impact is direct:

• Fewer preventable claims from climate-exacerbated perils
• Lower ALE exposure
• Stronger retention through value delivered before a loss
• Portfolio-level resilience in a destabilizing risk environment

For homeowners, it means safer homes, fewer surprises, and a greater sense of control in an era of climate uncertainty.

The Bottom Line

The $12.7 trillion of climate-exposed housing value is not just a macro statistic. It reflects an urgent, personal reality for families and a growing liability for insurers.

While climate change will continue reshaping risk landscapes, much of today’s loss potential can be meaningfully reduced through proactive, affordable, property-level prevention.

By embedding prevention into everyday homeownership, insurers can:

• Strengthen portfolios
• Stabilize pricing
• Deliver visible value
• Build trust across communities

Rafter enables carriers to make climate resilience actionable — one home at a time.

Learn more about Rafter at rafterhome.ai