Here's a fun fact that might make your palms sweat: The National Flood Insurance Program, which covers millions of American homeowners, keeps expiring. Like, regularly. Congress has to reauthorize it, and sometimes they cut it pretty close to the deadline. Or miss it entirely.

If you own a home in a flood zone—or you're thinking about buying one—this matters more than you might think. But before you start building an ark in your backyard, let's break down what's actually happening and what it means for your wallet as HouseJet sees it.

What Even Is the National Flood Insurance Program?

The NFIP has been around since 1968, created because private insurers basically said "yeah, we're not touching flood insurance with a ten-foot pole." Floods are expensive, predictable in some areas, and a financial nightmare for insurance companies. So the federal government stepped in and said, "Fine, we'll do it ourselves."

Fast forward to today, and the NFIP covers about 5 million policies across the country. If you have a federally backed mortgage and live in a high-risk flood zone, you're required to have flood insurance. Even if you're not required to have it, you might want it—floods cause billions in damage every year, and your regular homeowners insurance doesn't cover flooding. Surprise!

When the NFIP Expires, Here's What Happens

The drama of an NFIP expiration isn't quite as exciting as a government shutdown, but it creates its own special headaches.

New policies can't be written. If you're trying to buy a home in a flood zone and you need flood insurance to close (which you probably do), tough luck. Your closing gets delayed until Congress gets its act together.

Existing policies don't renew. If your policy is up for renewal during the lapse, you're in limbo. Your coverage doesn't just continue automatically.

Home sales screech to a halt in flood zones. Lenders won't close on a mortgage without the required insurance, so transactions just... wait. Everyone sits around refreshing news sites and stress-eating until Congress reauthorizes the program.

The good news? Congress usually fixes this pretty quickly because nobody wants to be the politician who tanked thousands of home sales. But "pretty quickly" in Congress-speak can still mean days or weeks of uncertainty.

How This Hits Different Regions

• The Northeast: Water, Water Everywhere

The Northeast gets hammered from multiple directions—coastal flooding from nor'easters and hurricanes, plus river flooding inland. States like New York, New Jersey, and Connecticut have tons of properties in flood zones, especially along the coast and near major rivers.

When the NFIP expires, coastal markets in places like Long Island, the Jersey Shore, and coastal Connecticut can freeze up fast. These are expensive properties where buyers absolutely need financing, and financing requires flood insurance. No insurance program means no closings, which means sellers start panicking and buyers start looking elsewhere.

Rivers like the Hudson, Delaware, and Connecticut also create flood risks inland, affecting markets you might not immediately think of as flood-prone.

• The Midwest: It's Not Just Coasts That Flood

People forget about the Midwest when talking about floods, but the Mississippi River and its tributaries have been causing mayhem for centuries. Cities along the Mississippi, Missouri, and Ohio rivers—think St. Louis, Kansas City, Cincinnati—all have significant flood exposure.

The impact here tends to be more localized. Homes right along riverbanks face delays and complications when the NFIP lapses, while homes just a few blocks away sail through transactions with no issues. It creates weird pockets of frozen market activity in otherwise healthy housing markets.

• The Northwest: Rain, Rivers, and Reality Checks

The Pacific Northwest gets absolutely drenched, and all that rain has to go somewhere. Rivers overflow, urban areas flood, and coastal regions deal with storm surge. Seattle, Portland, and their surrounding areas have plenty of flood-prone properties.

The NFIP expiration hits hardest in neighborhoods near rivers like the Columbia, Willamette, and various Puget Sound waterways. Buyers looking at those charming homes near the water suddenly find themselves in closing limbo, waiting for Congress to act.

• The Southeast: Hurricane Central

If there's a region that really, really needs the NFIP, it's the Southeast. Florida alone has more NFIP policies than any other state—by a lot. Add in the Gulf Coast of Alabama, Mississippi, Louisiana, and Texas, plus the Atlantic coasts of Georgia and the Carolinas, and you've got a flood insurance bonanza.

When the NFIP expires, the Southeast housing market feels it hard. We're talking about millions of properties that require flood insurance. Closings get delayed across entire metro areas. Miami, Tampa, New Orleans, Houston—these markets essentially hit pause on any transaction involving a flood zone property.

The economic impact is massive because so much of the Southeast's most desirable (and expensive) real estate sits near water. Beachfront, riverfront, bayfront—it's all potentially in play.

• The Southwest: Flash Floods and Desert Deluges

The Southwest might seem like an unlikely flood risk region—hello, it's the desert—but flash flooding is a serious issue. Arizona, Nevada, and parts of Southern California deal with intense rainfall that the hard-packed earth can't absorb, leading to dangerous floods.

The NFIP expiration has a smaller but still notable impact here. Desert communities built in flood plains or near washes find themselves unable to complete transactions during lapses. It's not as widespread as the Southeast, but it creates headaches for specific neighborhoods and communities.

Your Alternatives (Spoiler: They're Not Great)

So what do you do if the NFIP expires or you're looking for other options?

Private flood insurance is emerging. More companies are entering the flood insurance market, offering alternatives to the NFIP. These policies can sometimes be cheaper and offer better coverage, but availability varies wildly by location. Not every area has robust private options yet.

Risk assessment matters more than ever. Some buyers are choosing to avoid flood zones entirely, which makes sense but also limits options in coastal and waterfront markets where some of the most desirable properties sit.

Cash buyers have an advantage. If you don't need a mortgage, you're not required to have flood insurance (though you'd be kind of crazy not to get it if you're in a real flood risk area). During NFIP lapses, cash buyers can swoop in and close deals while financed buyers wait on the sidelines.

Sellers might need to get creative. Some sellers in flood zones are offering to pay for the first year of flood insurance, extending closing deadlines, or providing other incentives to keep deals alive during uncertain times.

The Bottom Line

The NFIP's recurring expiration drama is annoying, disruptive, and completely avoidable—but here we are. If you're buying or selling in a flood zone, you need to stay aware of the program's status and build flexibility into your timeline.

From the perspective of Mike Oddo, CEO of HouseJet, there’s good news and bad news:

• “The good news is that Congress typically reauthorizes the program eventually, and life goes on”.
• “The bad news is that "eventually" might mean your closing gets delayed, which means your moving truck gets rescheduled, which means your kids start at their new school late, which means... you get the picture”.

Keep an eye on the news, work with a lender who understands flood insurance requirements, and maybe have a backup plan. And if you're really worried about floods? There's always higher ground.