Earthquake Insurance Explained

Learn how earthquake insurance works, including percentage-based deductibles, coverage options, costs, and which states need it most. Get expert insights.

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Published September 5, 2025

Key Takeaways

  • Standard homeowners insurance does not cover earthquake damage—you need a separate policy or endorsement to protect your home and belongings.
  • Earthquake insurance deductibles are percentage-based (typically 10-20% of your home's value) rather than flat dollar amounts, meaning you'll pay significantly more out of pocket than with regular homeowners claims.
  • Only 10% of California residents have earthquake insurance despite the state experiencing 90% of U.S. earthquakes, leaving most homeowners financially vulnerable.
  • High-risk states include California, Washington, Oregon, Alaska, and states along the New Madrid fault line (Missouri, Arkansas, Illinois, Kentucky, Tennessee).
  • Annual premiums average $800-$1,000 but vary widely based on your location, home's construction, and chosen deductible percentage.
  • All earthquake damage within a 72-hour period counts as one event with one deductible, but aftershocks beyond that window could trigger a second claim.

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Here's something that catches most homeowners off guard: your standard homeowners insurance doesn't cover earthquake damage. Not a crack in the foundation, not a collapsed chimney, not even the broken dishes that flew out of your cabinets. If the ground shakes and your house suffers damage, you're on your own—unless you've specifically purchased earthquake insurance.

Whether you need earthquake insurance depends on where you live and what you can afford to lose. Let's break down how this coverage actually works, what it costs, and who really needs it.

What Earthquake Insurance Actually Covers

Earthquake insurance is available as either a separate policy or an endorsement you add to your existing homeowners insurance. Either way, it typically covers damage to your home's structure, your personal belongings, and additional living expenses if you need to temporarily relocate while repairs are made.

Your dwelling coverage handles repairs to your house itself—the foundation, walls, roof, and built-in appliances. Personal property coverage replaces your furniture, electronics, clothing, and other belongings damaged in the quake. And if your home becomes uninhabitable, additional living expenses coverage pays for hotel bills and meals while you're displaced.

What's important to understand is that earthquake policies may have separate deductibles for each type of coverage. Your home, your belongings, and your detached garage could each have their own deductible that you'll need to meet before insurance kicks in.

The Deductible Challenge: Why It's Different

This is where earthquake insurance gets tricky. Unlike your regular homeowners deductible (usually $500 to $2,000), earthquake deductibles are percentage-based. They typically range from 10-20% of your coverage limit, though some insurers offer deductibles as low as 5% or as high as 25%.

Let's put that in real numbers. If your home is insured for $300,000 and you have a 15% deductible, you're responsible for the first $45,000 of damage. That's a significant chunk of change. Even with a more affordable 10% deductible on a $200,000 home, you'd still pay $20,000 out of pocket before your insurance pays a dime.

Here's the reality check: most earthquake damage doesn't exceed these high deductibles. Minor to moderate quakes might crack your drywall, break windows, or damage your chimney—repairs that could cost $15,000 or $20,000. If your deductible is $30,000, your insurance won't pay anything. You're essentially self-insuring for everything except catastrophic damage.

One important timing rule: all earthquake damage within a 72-hour period counts as one event with one deductible. So if the initial quake hits on Monday and aftershocks continue through Wednesday, that's one claim. But if another significant aftershock hits on Friday (beyond the 72-hour window), you could face a second claim with a second deductible.

Who Really Needs Earthquake Insurance?

The obvious answer is anyone living in a high-risk earthquake zone. California, Oregon, and Washington top that list—the U.S. Geological Survey identifies these West Coast states as having the highest risk of a devastating earthquake. Alaska and Hawaii also face significant seismic activity.

But here's what surprises people: earthquake risk isn't just a West Coast problem. The New Madrid fault line runs through the central United States, putting Missouri, Arkansas, Illinois, Kentucky, and Tennessee at risk. States like Utah, Nevada, Montana, Idaho, Wyoming, and even South Carolina also face meaningful earthquake threats. In fact, 39 states face a significant threat of earthquake damage.

Yet coverage rates remain shockingly low. Only 10% of California residents have earthquake insurance, despite the state experiencing 90% of the country's earthquakes. In Washington, just 11.3% of residents are covered. Missouri saw earthquake insurance coverage plummet from 60.2% in 2000 to just 11.4% in 2021.

Your decision should factor in more than just geography. Consider your home's construction—older homes with unreinforced masonry are more vulnerable than newer buildings designed to modern seismic codes. Think about your finances: could you afford to pay for major structural repairs out of pocket? If you have a mortgage, your lender might require earthquake coverage in high-risk areas. And consider your risk tolerance—some people sleep better knowing they're protected, even if the odds of a major quake are relatively low.

What You'll Pay for Coverage

According to the California Earthquake Authority, the average annual premium for residential earthquake insurance runs about $800 to $1,000. But that's just an average—your actual cost could range from a few hundred dollars to several thousand, depending on several factors.

Location is the biggest factor. Living near an active fault line means higher premiums. Your home's age and construction type matter too—a wood-frame house on a reinforced foundation costs less to insure than an older brick home with a raised foundation. The coverage limits you choose and your deductible percentage also impact your premium. Here's where you have some control: choosing a higher deductible (say, 20% instead of 10%) can significantly lower your annual premium. You're essentially agreeing to shoulder more of the risk yourself in exchange for cheaper coverage.

For many homeowners, the calculation comes down to this: pay $800-$1,000 per year for protection that you'll probably never use, or risk being financially devastated if a major earthquake destroys your home. There's no universally right answer—it depends on your financial situation and peace of mind.

How to Get Earthquake Insurance

Start by contacting your current homeowners insurance company. Many insurers offer earthquake coverage as an endorsement to your existing policy, which is often the simplest option. If your insurer doesn't offer earthquake coverage (or if the price seems unreasonable), shop around with other carriers or check with your state's earthquake authority if one exists—California, Oregon, and Washington all have state-backed earthquake insurance programs.

When comparing quotes, don't just look at the premium. Pay close attention to the deductible percentage, coverage limits, and what's actually covered. Some policies exclude certain types of damage or have sub-limits on personal property. Read the fine print about masonry chimneys and swimming pools, which often have special coverage restrictions.

One last thing to know: if you do experience earthquake damage that doesn't exceed your deductible, you're not completely out of luck. Federal disaster loans are available to help cover uninsured losses, though these are loans that must be repaid, not free disaster relief.

Earthquake insurance isn't for everyone, but if you live in a seismic zone and couldn't afford to rebuild without insurance money, it's worth serious consideration. The high deductibles mean you're really only protecting yourself against worst-case scenarios—but those are exactly the scenarios that can wipe out your life savings. Take the time to get quotes, understand your local risk, and make an informed decision about whether this coverage makes sense for your situation.

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Frequently Asked Questions

Does homeowners insurance cover earthquake damage?

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No, standard homeowners insurance policies do not cover earthquake damage. You need to purchase separate earthquake insurance or add an earthquake endorsement to your homeowners policy. This includes all earthquake-related damage such as foundation cracks, structural damage, broken belongings, and even landslides caused by earthquakes.

How much does earthquake insurance cost?

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The average annual premium is about $800 to $1,000, but costs vary widely based on your location, home construction, coverage limits, and deductible choice. Homes near active fault lines or made of unreinforced masonry cost more to insure. Choosing a higher deductible (15-20% instead of 10%) can significantly reduce your premium.

What is a percentage deductible and how does it work?

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Unlike regular insurance with flat dollar deductibles, earthquake insurance uses percentage-based deductibles typically ranging from 10-20% of your home's insured value. For example, if your home is insured for $250,000 with a 15% deductible, you pay the first $37,500 of damage before insurance coverage begins. This means earthquake insurance primarily protects against catastrophic damage rather than minor repairs.

Which states need earthquake insurance the most?

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High-risk states include California, Washington, Oregon, Alaska, and Hawaii on the West Coast, plus Missouri, Arkansas, Illinois, Kentucky, and Tennessee along the New Madrid fault line. Utah, Nevada, Idaho, Montana, Wyoming, and South Carolina also face meaningful earthquake risk. In total, 39 states face significant earthquake threats, though risk levels vary considerably.

Does earthquake insurance cover aftershocks?

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Yes, but with an important timing rule. All earthquake damage within a 72-hour period counts as one event with one deductible, so aftershocks during that window are covered under your initial claim. However, significant aftershocks that occur more than 72 hours after the original earthquake could trigger a second separate claim with a second deductible.

Is earthquake insurance worth it if I have a high deductible?

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It depends on your financial situation and risk tolerance. While high deductibles (often $20,000-$50,000) mean you'll pay out of pocket for minor to moderate damage, earthquake insurance protects you from catastrophic financial loss if your home is destroyed. If you couldn't afford to rebuild or repair major structural damage from savings, the coverage provides essential protection despite the high deductible.

We provide this content to help you make informed insurance decisions. Just keep in mind: this isn't insurance, financial, or legal advice. Insurance products and costs vary by state, carrier, and your individual circumstances, subject to availability.

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