2026-04-14 · specialty, earthquake

Earthquake Insurance

Key takeaways

Standard homeowners insurance and renters insurance policies exclude damage caused by earth movement, which means a separate earthquake policy or endorsement is usually the only way to protect a home from a quake.
Earthquake deductibles are almost always a percentage of the dwelling limit, not a flat dollar amount, so out-of-pocket exposure can be much larger than on a typical home claim.
Retrofit discounts are common. Homes that have been bolted to the foundation, have braced cripple walls, or use flexible gas connections often qualify for lower premiums.
In California, the California Earthquake Authority (CEA) offers policies through participating carriers. Outside California, private admitted insurers and surplus lines markets fill the same role.
Seismic risk is not limited to the West Coast. Parts of Alaska, Nevada, Utah, Oregon, Washington, Tennessee, South Carolina, and Missouri also sit on or near active fault systems.

Overview

Earthquake insurance is a specialty coverage that pays for damage to a home, its contents, and related living expenses when the cause of loss is earth movement. It exists because standard property policies treat earthquake damage as an excluded peril, similar to how they treat flood. Without a separate policy or endorsement, a homeowner whose house shifts off its foundation in a quake would have no path to recovery through their main insurer.

The product is most visible in California, but it is available in every state with meaningful seismic exposure. Coverage can be written by the California Earthquake Authority through member insurers, by admitted private carriers, or through surplus lines markets for harder-to-place risks. Because premiums, deductibles, and sublimits vary widely, earthquake insurance is one of the lines where comparison shopping matters most.

What earthquake insurance covers

Dwelling

Dwelling coverage pays to repair or rebuild the structure of the home after a covered earthquake event. This typically includes the foundation, framing, roof, interior finishes, and fixtures that are permanently attached to the home. Some policies also pay to stabilize the home if a quake has compromised the foundation but not fully destroyed the structure.

Personal property

Personal property coverage applies to belongings inside the home, such as furniture, electronics, clothing, and household goods. Valuables like jewelry, fine art, collectibles, and firearms often fall under separate sublimits, so a reader with meaningful high-value items should read the declarations page carefully.

Loss of use

Loss of use, sometimes called additional living expense, covers the extra costs of living somewhere else while the home is uninhabitable. That can include hotel stays, short-term rentals, restaurant meals above normal grocery spending, and pet boarding. Some policies pay a fixed daily allowance, while others reimburse actual expenses up to a cap.

Other structures

Some earthquake policies include limited coverage for detached structures such as garages, fences, and sheds. Coverage for landscaping, swimming pools, masonry walls, and chimneys is often excluded or subject to strict sublimits, so these items deserve a close read before a policy is bound.

What earthquake insurance does not cover

Earthquake insurance is narrower than many buyers expect. Typical exclusions include:

Flood and tsunami damage, which require a separate flood insurance policy, usually through the National Flood Insurance Program or a private flood carrier.
Landslide, mudflow, and sinkhole damage, even when the underlying cause is seismic activity.
Damage to exterior masonry veneer, unreinforced chimneys, and cosmetic stucco cracks above a sublimit.
Vehicles, which are covered by the comprehensive portion of a personal auto policy.
Pre-existing damage or cracks that existed before the policy took effect.

How percentage deductibles work

Earthquake deductibles are almost always expressed as a percentage of the dwelling limit rather than a flat dollar amount. In many markets, the deductible choices range from roughly 5 percent to 25 percent of the dwelling limit. Some policies apply a single deductible to the whole claim, while others split it into separate deductibles for the dwelling and for personal property, which can materially change the math.

As a simple worked example with placeholder inputs, a 15 percent deductible on a $400,000 dwelling limit means $60,000 out of pocket before the policy begins paying for structural repairs. If the policy also has a separate 15 percent deductible on a $100,000 personal property limit, the contents deductible would be another $15,000. This is illustrative math, not a quoted statistic, and real deductibles depend on the policy form and the state.

The practical takeaway is that a smaller quake that causes, say, $30,000 in visible damage may not meet the deductible at all. Earthquake insurance is usually best thought of as catastrophic coverage for a major event, not first-dollar coverage for every tremor.

Who needs earthquake insurance

Earthquake insurance is worth a serious look for:

Owners of homes in high-risk seismic zones, especially California, Oregon, Washington, Alaska, Nevada, Utah, Tennessee, South Carolina, and Missouri near the New Madrid Seismic Zone.
Owners of older homes, unreinforced masonry, or homes on soft or liquefiable soils, because construction type drives repair cost in a quake.
Homeowners with large mortgages relative to their savings, because a total loss without coverage could wipe out equity faster than it could be rebuilt.
Renters in high-risk areas who want to protect contents and pay for temporary housing if the building becomes uninhabitable.

Most mortgage lenders do not require earthquake coverage, but a small number of lenders in the highest-risk zones may ask for it, particularly for jumbo loans. Even where it is not required, the decision is usually a question of risk tolerance and rebuild exposure. To think through how much structural coverage to carry in the first place, it helps to start with the same framework used for base property coverage in our guide on how much home insurance you need.

How much does earthquake insurance cost

Earthquake insurance premiums are shaped by a handful of drivers. This guide sticks to qualitative ranges rather than dollar figures, because rates swing widely by ZIP code, construction, and carrier.

Seismic zone: homes closer to active faults generally pay more than homes in lower-risk regions.
Soil type: properties on soft soils, fill, or liquefiable ground are rated higher than homes on bedrock.
Construction: wood-frame homes are usually cheaper to insure than unreinforced masonry because they perform better in shaking.
Age and retrofit status: older homes that have been bolted to the foundation and had cripple walls braced often qualify for retrofit discounts. A retrofit is any structural upgrade that reduces earthquake vulnerability, such as anchoring the frame to the foundation.
Deductible percentage: choosing a higher percentage deductible generally lowers the premium, which is why deductible selection has such a large effect on both price and protection.
Coverage form: whether the policy pays on a replacement cost or actual cash value basis changes both premium and payout, which is why many buyers cross-reference our primer on replacement cost vs actual cash value.

The California Earthquake Authority publishes premium rates by ZIP code through its participating insurers, which is useful for California homeowners who want a concrete starting point without contacting an agent. For a broader view of what pushes premiums up and down across property lines, see our guide to insurance cost drivers.

CEA vs. admitted private vs. surplus lines

In California, and to a lesser extent in other states, there are three main ways to buy earthquake insurance. Each works a little differently.

Market	How it works	Typical use case
California Earthquake Authority (CEA)	A publicly managed entity that sells earthquake policies through participating homeowners insurers. Rates are uniform across carriers for a given ZIP, construction, and policy form.	California homeowners who want a standardized product tied to their existing homeowners carrier.
Admitted private carriers	Traditional insurers regulated by the state insurance department. Rates, deductible options, and sublimits are filed with regulators.	Homeowners in or outside California who want flexibility in deductible and sublimit choices from a rate-regulated carrier.
Surplus lines	Non-admitted insurers that can write harder-to-place risks. Rates are not filed the same way, and policies may have different consumer protections.	Older homes, unusual construction, or high-value properties that admitted markets decline.

Buyers outside California will not see CEA as an option, but the same distinction between admitted and surplus lines still applies in most states with meaningful seismic risk.

How to compare earthquake insurance policies

When weighing two or more earthquake quotes, a structured comparison is much more useful than looking at price alone.

Deductible structure: confirm whether the policy uses a single deductible or separate deductibles for the dwelling and personal property, and whether the percentage applies to the dwelling limit or to the total loss.
Replacement cost vs actual cash value: decide whether you want the policy to pay the cost of rebuilding with like-kind materials or the depreciated value of what was lost.
Sublimits: review caps on masonry veneer, chimneys, swimming pools, landscaping, and other outdoor features that are often excluded or capped at low amounts.
Code upgrade coverage: confirm the policy pays to rebuild to current building code, since post-quake inspections often require upgrades that were not part of the original structure.
Retrofit discounts: ask which specific retrofits trigger a credit and request a written confirmation once the work is verified.
Contents and loss of use limits: check that personal property and additional living expense limits are large enough to cover a realistic displacement scenario.

For a more general walk-through of how to line up any property quote, see our guide on how to compare insurance quotes when you are ready to put two policies side by side.

Frequently asked questions

Does homeowners insurance cover earthquake damage?

No. Standard homeowners and renters policies exclude damage caused by earth movement, which includes earthquakes, aftershocks, and in most cases landslides triggered by a quake. Coverage has to be added through a separate earthquake policy, a CEA policy, or a private endorsement where available.

How does a percentage deductible work?

Earthquake deductibles are expressed as a percentage of a coverage limit, usually the dwelling limit. If the dwelling limit is $400,000 and the deductible is 15 percent, the homeowner pays the first $60,000 of structural loss before the policy responds. Some policies apply a second, separate deductible to personal property. This structure is different from most home claims, where the deductible is a flat dollar amount.

Do I need earthquake insurance outside California?

You might. States like Washington, Oregon, Alaska, Nevada, Utah, Tennessee, South Carolina, and Missouri all have zones with meaningful seismic exposure, according to the United States Geological Survey. Whether coverage makes sense depends on the proximity to known faults, the home’s construction, and the homeowner’s ability to absorb a large loss out of pocket.

Does earthquake insurance cover landslides and tsunamis?

Usually not. Landslide and mudflow damage are typically excluded even when a quake is the underlying cause, and tsunami damage is treated as a flood loss, which requires a separate flood insurance policy. A reader in a coastal or hillside area should review both products together rather than assuming one policy covers the full risk.

Conclusion

Earthquake insurance is a specialty line that rewards careful shopping. The deductible structure, sublimits, and market choices (CEA, admitted, or surplus lines) can all change how a claim is actually paid, so the right approach is to define a realistic loss scenario, confirm the policy language supports it, and then compare two or three options side by side. For most households, the decision comes down to whether they could afford to rebuild without help, and whether the premium is a reasonable price for removing that risk.

Sources

United States Geological Survey, Earthquake Hazards Program: https://www.usgs.gov/programs/earthquake-hazards
California Earthquake Authority: https://www.earthquakeauthority.com
Insurance Information Institute, Earthquake Insurance Basics: https://www.iii.org
National Association of Insurance Commissioners: https://www.naic.org
Federal Emergency Management Agency, Earthquake Safety at Home: https://www.fema.gov/emergency-managers/risk-management/earthquake