Location, Location, Inundation: Understanding Climate Risk In Real Estate

There’s a version of sustainable home-buying where you do everything right.

You buy the charming fixer-upper instead of the teardown. You replace the ancient gas furnace with a heat pump. You insulate the attic, add solar, maybe even become the kind of person who casually says things like “building envelope” at dinner parties.

And then the creek behind your house floods.

Or the hillside above it catches fire.

Or your insurance company sends you a politely-worded email explaining they’re no longer writing policies in your state.

The sustainability conversation around housing usually focuses on what comes out of homes — emissions, electricity use, waste, energy efficiency. It rarely focuses on what’s coming toward them. But…for obvious reasons, this is changing. Fast. 

THE NUMBERS

How Big Is Climate Risk, Actually?

More than 1 in 4 U.S. homes — representing roughly $12.7 trillion in real estate value — now face at least one severe or extreme climate risk, including flooding, wildfire, hurricane-strength winds, or extreme heat, according to Realtor.com’s 2025 Climate Risk Report.

Whether housebuyers are ready for it or not, the insurance industry is already pricing this in.

From 2018 to 2022, homeowners insurance premiums rose substantially faster than inflation. Zoom out further, and the numbers get even uglier: insurance costs increased roughly 74% between 2008 and 2024, while home prices rose around 40% over the same period. Your insurance bill is increasingly behaving like a climate-risk receipt.

Then there’s the disasters themselves.

In 2024 alone, the U.S. experienced 27 separate weather and climate disasters that each caused more than $1 billion in damages, totaling approximately $182 billion. Compare that to the historical average: from 1980 through 2024, the U.S. averaged about 9 billion-dollar disasters annually. From 2020 to 2024, that jumped to roughly 23 per year. These are no longer “once-in-a-generation” events. At this point, they’re starting to feel more like annual subscriptions.

THE FOUR RISKS

What You’re Actually Evaluating

Not all climate risk looks the same, so here’s what to pay attention to across the four major categories:

Flooding

Flooding is both the most widespread and the most underestimated climate risk in the U.S.

Realtor.com estimates that nearly 6 million homes face severe flooding risk over the next 30 years — roughly 2 million more than FEMA currently identifies.

Why the gap? FEMA flood maps are notoriously outdated. An NBC News analysis found that roughly 75% of FEMA flood maps haven’t been updated to reflect current rainfall patterns, development, and climate conditions.

Translation: if a home is on a FEMA flood map, take it seriously. If it’s not on one, do not automatically assume you’re in the clear.

The highest flood-risk metros include New Orleans, Houston, Miami, Tampa, and Virginia Beach. But increasingly intense rainfall is also driving inland flooding in places that historically felt relatively safe from it.

Turns out climate change loves expanding into new markets. Love to see it, amiright?! 

Wildfire

Roughly 1 in 6 homes currently on the market faces major wildfire risk. In some places like Riverside County, California, for example, that number climbs above 70%.

The 2025 Los Angeles fires alone caused an estimated tens of billions in insured losses and immediately strained California’s already-fragile FAIR Plan, the state-backed insurer of last resort.

The biggest danger zone is what’s known as the wildland-urban interface, where suburban development pushes up against undeveloped land. Which, unfortunately, also tends to describe many of the places people most want to live.

Properties once considered “moderate risk” a decade ago are increasingly moving into high-risk territory as fire seasons become longer, hotter, windier, and less predictable.

Extreme Heat

Extreme heat is the climate risk we still weirdly underestimate because it doesn’t always look dramatic on television.

More than half of all new home listings in 2024 carried major heat risk exposure. Unlike floods or fires, heat usually doesn’t destroy a house overnight — but it quietly impacts almost everything else: electricity demand, cooling costs, grid reliability, outdoor livability, water systems, and long-term public health.

It also has a way of turning “cute walkable neighborhood” into “surface of the sun by July.”

For Denver specifically: relative to coastal and southern metros, risks are somewhat lower overall. But wildfire smoke, worsening heat waves, and long-term water availability tied to snowpack are all very real things to watch.

Hurricane & Wind

About 18% of U.S. homes face severe risk from hurricane-strength winds.

Most of that exposure is concentrated along the Gulf and Atlantic coasts, but hurricane impacts increasingly extend much farther inland than many buyers realize. Florida, Texas, and Louisiana account for the majority of national hurricane and flood losses.

And as storms intensify, insurers are responding accordingly by raising premiums, tightening coverage, or exiting markets altogether.

Nothing says “welcome home” quite like your insurer ghosting you.

WHAT TO DO

How To Actually Assess A Property

The good news: climate risk tools are now free, accessible, and increasingly baked into the websites people already obsessively scroll at midnight.

Start here:

• Zillow and Redfin now display First Street climate-risk scores directly on many listings, covering flood, wildfire, heat, wind, and air quality risk. Think of this as your first stop — not your final answer.
• FEMA’s Flood Map Service Center lets you search any address directly. Just remember the “75% outdated” caveat and treat FEMA maps as a baseline, not gospel.
• Risk Factor by First Street offers more granular and forward-looking projections than what usually appears directly on Zillow or Redfin.
• If you’re buying in wildfire country, state-level tools like CAL FIRE’s Fire Hazard Severity Zone Maps provide additional local context.
• Yale Climate Connections also maintains an excellent roundup of flood-risk tools if you really want to spiral productively.

And perhaps most importantly:

Get an insurance quote before closing.

Not after.

In some high-risk areas, buyers are discovering at the very end of the process that coverage is either unavailable or financially absurd. Learn this before emotionally committing to the palatial primary bath.

QUESTIONS TO ASK BEFORE YOU BUY

• Has this property ever flooded — even outside an official FEMA flood zone?
• Has it filed any insurance claims in the past 5–10 years? (A CLUE report can help with this.)
• Is the current insurer renewing the policy? At what premium?
• Has any insurer previously declined coverage or refused renewal?
• What does the 30-year climate-risk projection look like?

The house you’re buying today will still exist in tomorrow’s climate.