Earthquake Insurance: Cost, Coverage, Deductibles

Earthquake damage is not covered by a standard homeowners policy. That single sentence is the reason this coverage note exists, because most homeowners find it out at the worst possible moment, standing in a room with a new crack running from the baseboard to the ceiling. Earth movement is one of the two classic exclusions on the standard form, sitting right next to flood, and it is written broadly: earthquakes, aftershocks, landslides, mudflow, subsidence, sinkholes, and ordinary settling all fall on the wrong side of the line. Covering shaking damage requires a separate purchase.

What follows is the mechanics of that separate purchase, which behaves unlike anything else in a homeowners policy. This coverage note works through the two ways to buy it, what the coverage includes and pointedly does not, the percentage deductible that decides whether you ever collect anything, the way separate deductibles can apply to the dwelling, contents, and loss of use at once, what actually moves the premium, and how to decide whether the product is worth its price for your house. Our coverage note on what home insurance covers maps the standard form, our note on flood coverage amounts handles the other major excluded peril, and our note on deductibles sets up the arithmetic. Run your own figures in the companion below as you read.

The short answer: is earthquake damage covered by home insurance?

No. Every standard homeowners form in common use excludes earth movement, and that exclusion is the reason earthquake insurance exists as a product at all. The wording typically sweeps in earthquake, earth tremor, aftershock, landslide, mudslide, mudflow, subsidence, sinkhole collapse, and the slow settling or shifting of ground under a foundation. Some forms exclude the damage regardless of what caused the earth to move, which is why a landslide triggered by heavy rain is usually excluded too, even though rain itself is not an excluded peril.

The exclusion is written this way for the same reason flood is excluded: the losses are geographically concentrated and highly correlated. Ordinary insurance economics work because a fire at one house does not make a fire at the neighbors more likely. A major earthquake damages tens of thousands of buildings within minutes, which is a fundamentally different risk to price and to fund. The insurance response is to separate that peril out, price it on its own, and attach a deductible large enough that the coverage responds to catastrophes rather than to cosmetic damage. Understanding that design decision explains almost everything else about the product.

Why the earth movement exclusion is written so broadly

Read the exclusion in your own policy and you will notice it does not say “earthquake” and stop. It usually names several forms of ground movement, then adds a phrase making the exclusion apply whether the movement was caused by natural forces or by human activity, and often whether or not another covered peril contributed to the loss. That last clause matters. It is an anti-concurrent-causation provision, and it is what prevents a homeowner from arguing that because a covered peril was involved somewhere in the chain, the whole loss should be paid.

The practical consequence is that adjacent situations you might not think of as earthquakes are also excluded. A hillside that slumps after a wet winter, a foundation that cracks as expansive clay soil swells and shrinks across seasons, a sinkhole opening under a driveway, or ground settling under a house built on poorly compacted fill are all typically outside the standard policy. Some of those have their own specialized coverages in some states, and sinkhole coverage in particular is regulated differently in a handful of places. None of them are fixed by adding earthquake coverage, which is aimed specifically at seismic shaking. Our note on hazard insurance explains where the standard form’s protection begins and ends.

The two ways to buy earthquake coverage

There are two routes, and which one is open to you depends on your insurer, your state, and your building. The first is an earthquake endorsement added to your existing homeowners policy. It keeps everything in one place: one insurer, one renewal, one agent, one claim number if something happens. The endorsement generally rides on your existing dwelling, contents, and loss of use limits rather than setting new ones, and it adds its own percentage deductible that applies only to earthquake losses.

The second is a standalone earthquake policy, a separate contract written specifically for the peril. This is the usual route where the standard-market insurer will not add the endorsement, which is common in higher-hazard areas, and it is also how state-run or state-authorized earthquake programs write coverage in a few states. A standalone policy sets its own limits, which means you have to make sure the dwelling limit matches a realistic rebuild cost rather than defaulting to whatever number appears. It also means a claim after a quake involving fire could involve two insurers. Ask your current insurer first, because the endorsement is simpler when it is available.

What earthquake insurance actually covers

At its core, earthquake coverage pays to repair or rebuild the structure of your home when shaking damages it, subject to your limit and your percentage deductible. That includes the parts of the building people think of as the house: foundation, framing, walls, roof structure, floors, attached garage, plumbing and electrical runs inside the walls, built-in cabinetry, and the finishes that have to be torn out and put back to reach the damage. Chimneys are a classic earthquake casualty, and masonry chimneys on wood-frame houses are among the first things to fail in a quake.

Most policies also offer contents coverage for belongings broken by the shaking, and loss of use coverage for the extra cost of living somewhere else while the home is repaired or rebuilt. Some standalone forms cover the structure only and treat contents and loss of use as options you have to elect, sometimes at low default limits. That is a genuine difference from a homeowners policy, where all three come bundled. Check which parts you are actually buying, since the assumption that contents are included is a common and expensive mistake. Our note on dwelling coverage explains how the structural limit should be set in the first place.

What earthquake insurance does not cover

The exclusions list is where the product diverges most sharply from what buyers expect. Land is commonly excluded, and land is frequently the most expensive thing a quake damages. If the slope your house sits on fails, stabilizing the hillside can cost more than the building, and an earthquake policy that covers the structure will often not fund the ground work that makes rebuilding possible. Retaining walls, which are the structures most exposed to ground movement, are also commonly excluded or heavily sub-limited.

Exterior features generally fall outside as well: fences, gates, driveways, walkways, patios, swimming pools and their decking, detached decks, and landscaping. Vehicles are not covered by any property policy for this; earthquake damage to a car is a comprehensive auto question. Flood and tsunami damage following a quake is excluded from earthquake policies, because rising water belongs to flood insurance, a separation our note on flood coverage amounts explains in detail. Some forms also exclude or sub-limit masonry veneer, and many limit or exclude damage to structures that were already in poor condition before the event.

Fire following an earthquake, and the water that follows both

Here is the exception that trips people in the other direction. Fire following an earthquake is usually paid by your standard homeowners policy rather than by an earthquake policy, because fire is a covered peril on the standard form and most forms do not exclude fire simply because a quake triggered it. That is not a small carve-out. Ruptured gas lines and damaged wiring after strong shaking can start fires that spread while water mains are broken and fire crews are stretched across a whole region, and historically the fire following a major quake has sometimes destroyed more than the shaking itself.

The complication is that one event can then involve two coverages with two very different deductibles. The shaking damage goes to the earthquake policy under a large percentage deductible; the fire damage goes to the homeowners policy under a flat deductible that might be an illustrative $1,000. Scoping which damage came from which cause becomes a real negotiation on a house that both shook and burned. Photograph everything before any repair begins, keep the two claim files separate, and ask both adjusters in writing how the allocation is being made. Our coverage note on fire damage covers the fire side of that claim in full.

Percentage deductibles: the single most misunderstood feature

Every other deductible you deal with is a flat dollar amount. You have a $1,000 deductible, a loss costs $9,000, the insurer pays $8,000. Earthquake coverage does not work that way. The deductible is expressed as a percentage, commonly ranging from an illustrative 5% to 25%, and it is applied to your coverage limit rather than to the size of your loss. On an illustrative $400,000 dwelling limit, a 15% deductible is $60,000. Nothing is paid on the structure until the structural damage exceeds $60,000, and what is paid is the amount above that figure.

Two consequences follow, and both surprise people. First, raising your dwelling limit raises your deductible in dollars, so the act of insuring your home more adequately also raises the bar the loss has to clear. Second, the deductible is fixed at the moment you buy the policy, regardless of how big or small the eventual loss is, which is the opposite of the intuition that a deductible is a small first slice of a claim. Our note on choosing a deductible walks the flat-deductible trade-off, and the percentage version is that same trade-off amplified by a factor of fifty.

How a percentage deductible is calculated, step by step

The arithmetic is simple once the base is clear, and the base is the trap. Take the coverage limit shown on your declarations page, multiply by the deductible percentage, and the result is a fixed dollar amount that the loss has to exceed. On a $400,000 dwelling limit at 10%, the deductible is $40,000. A $70,000 repair bill pays $30,000. A $35,000 repair bill pays nothing, because it never cleared the threshold. There is no partial credit, no sliding scale, and no reduction for a small loss.

Notice what this does to the relationship between coverage and protection. If you increase your dwelling limit from $400,000 to $500,000 because construction costs rose, your 10% deductible rises from $40,000 to $50,000 without you choosing anything. If you carry extended replacement cost, confirm whether the deductible is calculated on the base limit or on the extended figure, because the two answers differ by real money. And if your policy expresses the deductible against something other than Coverage A, read that line twice. Set your own limit and percentage in the companion below and watch the threshold move.

Separate deductibles for dwelling, contents, and loss of use

Now the part that produces the largest number of unpleasant surprises. Many earthquake policies do not apply one deductible to the whole claim. They apply a separate percentage deductible to each coverage part, each calculated on that part’s own limit. On our illustrative home with a $400,000 dwelling limit, a contents limit at 50% of that, and loss of use at 20% of it, a single 15% deductible percentage produces three separate thresholds: $60,000 on the dwelling, $30,000 on contents, and $12,000 on loss of use.

That structure changes outcomes dramatically for moderate losses. Damage has to clear each threshold independently, so a quake that causes $50,000 of structural damage, $20,000 of broken contents, and $10,000 of temporary housing costs pays nothing on any of the three, even though the total loss is $80,000. Other policies apply a single deductible calculated on the dwelling limit and then pay everything above it across all coverages, which on that same loss would pay $20,000. Same percentage, same limits, radically different result. This one structural detail is worth reading your declarations page for before anything else.

A worked example: the moderate quake that pays nothing

Put the mechanics on one illustrative house. The Alvarez family carries a $400,000 dwelling limit, a $200,000 contents limit at 50% of the dwelling figure, and an $80,000 loss of use limit at 20% of it. Their earthquake policy carries a 15% deductible applied separately to each coverage part, so their three thresholds are $60,000, $30,000, and $12,000. A moderate quake hits on a Tuesday morning. Nobody is hurt and the house is standing.

The damage assessment comes in at an illustrative $52,000 for the structure: cracked foundation stem walls, a failed masonry chimney, cracked drywall throughout, doors that no longer close in their frames, and broken interior tile. Contents losses come to an illustrative $9,000, mostly dishes, glassware, a television, and a bookcase that came down. Living elsewhere for six weeks while the chimney and foundation work happens costs an illustrative $6,000 above normal. The total loss is $67,000.

The payout is zero. The structure damage of $52,000 does not clear the $60,000 dwelling threshold. The contents loss of $9,000 does not clear the $30,000 contents threshold. The displacement cost of $6,000 does not clear the $12,000 loss of use threshold. A family that paid premiums for years absorbs the entire $67,000 loss, and every part of that outcome is exactly what the policy says. Had the same policy applied a single $60,000 deductible across all coverages instead of three separate ones, the claim would have paid $7,000, which is still a small fraction of the loss. Model your own version of this in the companion below.

A worked example: the severe quake where the policy carries the loss

Run the same house through the event the coverage is actually designed for. This time the shaking is severe enough that the structure is a total loss: the house comes off its foundation, the frame racks beyond repair, and the building has to be demolished and rebuilt from the slab up. The rebuild cost equals the $400,000 dwelling limit. Contents losses come to an illustrative $120,000. The family is displaced for fourteen months at an illustrative total of $40,000 above their normal cost of living. The gross loss is $560,000.

Now the three deductibles come off. The dwelling pays $400,000 minus the $60,000 threshold, or $340,000. Contents pay $120,000 minus $30,000, or $90,000. Loss of use pays $40,000 minus $12,000, or $28,000. The policy pays $458,000, and the family absorbs $102,000, which is exactly the sum of the three deductibles. That is a large amount of money to find, and it is also $458,000 the family did not have to find.

Set the two examples side by side and the product’s shape is obvious. On a $67,000 loss it paid nothing. On a $560,000 loss it paid $458,000. Earthquake insurance is not damage insurance, it is solvency insurance. Judging it by whether it would help with cracked plaster is judging it against a job it was never built to do. Judging it by whether you could survive losing the house without it is the honest test.

What earthquake insurance costs, and what moves the price

Premiums are usually quoted as a rate per $1,000 of coverage, then multiplied by your limits, which means the price scales with how much house you are insuring. What makes earthquake pricing distinctive is how wide the range of rates is. Most property coverages vary within a band of perhaps two or three times between a good risk and a poor one. Earthquake rates can vary by considerably more, because the underlying hazard genuinely differs by that much between a firm-ground site in a low-seismicity region and a soft-soil site near an active fault.

Illustratively, and only illustratively, the same $400,000 dwelling limit might be quoted in the high hundreds of dollars a year for a single-story bolted wood-frame house on firm ground in a moderate-hazard area, and several thousand dollars a year for an older two-story house with unbraced cripple walls on soft soil close to a known fault. Unreinforced masonry buildings are often quoted at rates high enough to be prohibitive, or declined outright. None of these are quotes. The only way to learn your number is to ask for one on your actual address and building. Our note on why home insurance is expensive covers the broader pricing pressures underneath all of this.

Soil, ground, and why your neighbor pays less

Ground behavior is the factor homeowners least expect and underwriters care most about. Seismic waves that pass through firm rock arrive at the surface with less amplitude than the same waves passing through soft, loose, water-saturated sediment, which can amplify shaking substantially. Two houses a few hundred yards apart, one on bedrock and one on filled ground at the edge of an old creek bed, are genuinely exposed to different amounts of motion in the same event, and the pricing reflects that.

Beyond amplification there is liquefaction, where saturated loose sand or silt temporarily behaves like a liquid under sustained shaking, allowing buildings to settle, tilt, or sink. There is also slope stability, which governs whether a hillside site is exposed to landslide, and proximity to a mapped fault trace, which governs exposure to surface rupture. Publicly available seismic hazard and soil maps exist for many regions, often published by state geological surveys, and they are worth looking at before you buy a house rather than after. Your insurer’s rating engine is reading something similar.

Construction type: wood frame, masonry, and the buildings that fail first

Construction type is the second heavyweight in the rating. Wood-frame houses generally perform comparatively well in earthquakes because wood is light and flexible, and lighter buildings attract smaller forces. Masonry performs poorly in shaking because it is heavy, brittle, and strong in compression but weak in tension, which is the opposite of what seismic loading demands. Unreinforced masonry, meaning brick or block walls without steel reinforcing, is the construction type with the worst seismic record, and it is why so many older commercial buildings in seismic regions have been the subject of mandatory retrofit ordinances.

Several other building features move the rate. Number of stories matters, since taller buildings sway more. Soft-story configurations, where a weak open level such as a tuck-under garage sits below heavier floors, are a known failure mode. Masonry chimneys, heavy tile roofs, and unbraced masonry veneer add weight and brittleness high up. The age of the building matters mostly as a proxy for which building code was in force when it was built, since seismic provisions in modern codes are substantially more demanding than those of several decades ago. None of this is about how well the house was maintained. It is about how it behaves when the ground moves.

Cripple walls, foundation bolting, and retrofit credits

If your house is an older wood-frame home, there is a specific and well-understood set of weaknesses worth knowing by name. A cripple wall is the short stud wall between the foundation and the first floor, common in houses with a raised floor and a crawl space. Unbraced, it can rack sideways under shaking and let the house slide off its foundation, which converts a repairable house into a demolition. Bracing those walls with structural sheathing, and bolting the wooden sill plate to the concrete foundation with anchor bolts, addresses the failure mode directly.

The rest of the list is short and mostly cheap: strapping the water heater so it does not topple and tear its gas line, securing tall furniture and heavy fixtures to studs, adding flexible gas connectors, and latching cabinets that hold heavy or breakable items. Insurers and some state programs offer premium credits for documented retrofit work, and grant programs exist in some places to help fund it, though eligibility rules and amounts vary and change. Keep the permit, the engineering or contractor documentation, and dated photographs, because a credit generally requires proof. Our note on lowering your premium covers the discount side across the whole policy.

Contents coverage and the things that actually break

Earthquakes break a distinctive category of possessions. Anything on a shelf, anything hanging, anything made of glass or ceramic, and anything tall and top-heavy is at risk in a way that fire and theft do not replicate. Televisions come off stands, dishes come out of cabinets, bookcases come down, wine collections do not survive, and framed art comes off walls. The contents portion of an earthquake claim tends to be a long list of individually modest items, which is exactly the sort of claim that is hard to prove after the fact.

Two practical points follow. First, check whether contents coverage is included in your earthquake form or is an option with its own limit, because standalone policies vary here. Second, the same percentage deductible logic applies, and the contents threshold is calculated on the contents limit, which is smaller, so the dollar threshold is smaller too. On our illustrative home it is $30,000, which still means a substantial breakage bill can produce nothing. Build the inventory before you need it using our home inventory note, and understand how items are valued with our note on actual cash value versus replacement cost.

Loss of use after an earthquake

Loss of use, sometimes called additional living expenses, pays the extra cost of living somewhere else while your home is uninhabitable. After an earthquake this coverage is unusually important and unusually likely to be exhausted, for a reason specific to the peril: a major quake damages a whole region at once. Contractors, engineers, inspectors, and building materials all become scarce simultaneously, permitting offices are overwhelmed, and rental housing near the affected area becomes both expensive and hard to find. A rebuild that would take eight months in a normal market can take considerably longer.

That makes both the dollar limit and the time limit worth checking. Many forms cap loss of use both by amount and by a period such as 12 or 24 months, whichever comes first. On our illustrative home the limit is $80,000 at 20% of the dwelling figure, with a $12,000 threshold before anything is paid. Fourteen months of displacement at an illustrative $40,000 cleared it comfortably in the severe example, but a shorter displacement after moderate damage would not clear it at all. Ask specifically whether extended loss of use is available, since the timing risk here is structurally larger than for a single-house fire.

Building code upgrades and the rebuild-to-code gap

A rebuild after a serious quake almost always triggers current building code, and current seismic provisions are more demanding than the ones in force when most existing houses were built. That can mean shear walls where there were none, hold-downs and anchor bolts, a redesigned foundation, updated electrical and plumbing, and sometimes a different structural configuration entirely. None of that cost is part of rebuilding what you had, which is what a dwelling limit is sized for.

Ordinance or law coverage is the endorsement that funds the difference, and policies commonly include a modest amount as standard with higher amounts available. Confirm whether your earthquake coverage carries any, because the endorsement on your homeowners policy may not extend to an excluded peril automatically. There is also a partial-demolition trap: some jurisdictions require a structure damaged beyond a stated percentage to be brought fully to code, which can turn a large partial loss into a functional total loss. On an older house in a seismic region this is not a marginal detail, and it is worth raising with your agent by name.

State earthquake programs and residual markets

In a few states where seismic risk is concentrated, the standard market alone has not reliably supplied earthquake coverage, and public or quasi-public programs have been created to write it. These programs generally offer policies through participating insurers, set their own deductible percentages and coverage options, and often make contents and loss of use elective with defined limits. Some also fund or promote retrofit grant programs, on the reasoning that reducing losses is cheaper than paying them.

The important thing to understand is that eligibility rules, coverage menus, deductible options, rate structures, and even the existence of these programs differ by state and change over time. This coverage note deliberately does not name programs or quote their figures, because a stale specific here would be worse than no specific at all. If you live in a seismically active state, ask your insurer whether coverage would be written directly or through a program, and confirm the current terms with your state department of insurance or a licensed agent who writes in your area. Treat any figure you read online, including in this article, as illustrative until a quote confirms it.

Renters and condo owners: a different calculation entirely

For renters the arithmetic is different and often more favorable. You are not insuring a building, so there is no dwelling limit and no large percentage deductible calculated on one. Earthquake coverage for a renter attaches to contents and loss of use, the limits are smaller, and so are the deductibles in dollars. The exposure being covered is your possessions and the cost of relocating if the building is red-tagged and you cannot return to it, which after a major event can happen to a structurally sound-looking building for weeks. Our note on renters insurance covers the base policy that this attaches to.

Condo owners sit in the most complicated position. The association’s master policy covers the building to whatever extent the declarations and state law provide, and the association may or may not carry earthquake coverage on it. If it does not, and the building suffers major damage, unit owners can face a special assessment to fund repairs. Loss assessment coverage on an individual unit policy is the mechanism that may respond to that assessment, and whether it applies to an earthquake assessment depends on its wording. Read the association’s coverage, then your own, then the loss assessment provision. Our condo insurance note walks the master-policy boundary in detail.

Is earthquake insurance worth it? How to actually decide

The honest framework has three inputs, and none of them is a general rule. The first is your hazard: how much shaking your site is genuinely exposed to, which is a function of regional seismicity, distance to mapped faults, and the ground you are built on. The second is your building’s vulnerability: construction type, age, configuration, and retrofit status determine how much damage a given amount of shaking produces. The third, and the one people skip, is your own balance sheet: what a total loss would do to you financially if it were uninsured.

Work the third one carefully, because it is where the decision usually turns. If the house is paid off and represents most of your net worth, an uninsured total loss removes most of your net worth. If the house is mortgaged, an uninsured total loss leaves you owing the balance on a building you cannot live in while paying to live somewhere else, which is the scenario that produces the worst outcomes. Against that, compare the deductible to a realistic loss: if your deductible is $60,000 and the damage scenario you actually fear is $40,000, the coverage does not respond to your fear. Two different questions, and both deserve answers before you buy or decline.

Comparing the deductible against a realistic loss

Here is a concrete way to run that comparison at the kitchen table. Write down your dwelling limit. Multiply by each deductible percentage on offer to get the dollar thresholds. Then estimate two loss scenarios for your specific house: a moderate one, where the building is damaged but repairable, and a severe one, where it is a total or near-total loss. Compare each threshold to each scenario. The coverage only does something if at least one scenario clears at least one threshold by a margin that matters to you.

Then price the deductible choice itself. Moving from a 10% deductible to a 20% one on our illustrative $400,000 home takes the dwelling threshold from $40,000 to $80,000, an extra $40,000 of exposure. If that move saves an illustrative $600 a year in premium, you are trading $40,000 of downside for $600 a year, which takes about 67 years of savings to fund once. That ratio does not automatically make the lower deductible correct, since the premium is paid every year and the loss may never come, but it does make the trade visible instead of abstract. Our note on choosing a deductible frames the same reasoning at flat-deductible scale.

How to read the earthquake section of your declarations page

Five lines decide almost everything, and they are usually findable in a few minutes. First, is earthquake or earth movement coverage shown at all, either as an endorsement on your homeowners declarations or as a separate policy in your file. Second, what is the deductible percentage. Third, what limit is that percentage applied to, and is it your Coverage A base limit or something else. Fourth, is there one deductible or separate deductibles for dwelling, contents, and loss of use. Fifth, are contents and loss of use included, and at what limits.

Write the resulting dollar figures in the margin, because a percentage on a page does not feel like money and $60,000 does. Then check two more things: whether ordinance or law coverage applies to an earthquake rebuild, and whether any exterior features you care about, such as a pool or a retaining wall, are covered or excluded. Our note on reading a declarations page walks the document line by line. Anything you cannot find in the document, ask your agent to answer by email rather than by phone, so the answer exists in writing.

What to do in the first days after an earthquake

Safety comes before paperwork. Once the shaking stops, check for gas smells and shut off the gas at the meter only if you suspect a leak, since restoring service usually requires the utility. Watch for damaged electrical wiring, unstable chimneys, and cracked masonry that could fall in an aftershock. Aftershocks are not hypothetical, and buildings weakened by the main shock fail in them. If the building has been tagged by inspectors, respect the tag.

Then document, before anything is cleaned up or repaired. Photograph and video every room, every crack, every separation between building elements, the foundation from the crawl space if it is safe to enter, the chimney from outside, and every broken possession before it goes in a bin. Note the date and time on everything. Report the claim promptly and get a claim number, ask whether an advance payment is available for immediate living costs, and make reasonable temporary repairs to prevent further damage while keeping those receipts. Our note on filing a claim sets out the sequence, and our note on documenting damage covers the photographic method.

Mistakes that cost people money on earthquake claims

The most expensive mistake is assuming the standard policy covers it, which is why so many uninsured owners discover the exclusion at the worst moment. The second is buying the coverage without ever converting the deductible percentage into dollars, so the threshold is a surprise at claim time rather than a known figure. The third is a dwelling limit that has drifted below real rebuild cost, which caps the payout on exactly the catastrophic loss the policy exists for. Our coverage-sizing note is the fix for that one.

Others are procedural. Cleaning up and repairing before documenting destroys the evidence for the claim. Missing the reporting window in a form that has one, or the proof-of-loss deadline, can end a claim on process alone. Failing to separate earthquake damage from fire-following damage leaves money on the table when two policies with different deductibles are in play. Underclaiming contents by listing only the obvious items is chronic. And assuming water damage after a quake is covered by the earthquake policy, when rising water belongs to flood coverage, produces one of the most common denials, a boundary our coverage note on water damage explains in general terms.

Buying earthquake coverage: the questions to ask

If you decide to price it, the useful questions are narrow and specific. Is coverage available for my building type and location at all, as an endorsement or as a standalone policy. What deductible percentages are offered, and what does each cost per year on my limits. Is the deductible applied once, or separately to each coverage part. Are contents and loss of use included, and at what limits, and can they be increased. Is ordinance or law coverage available for a code-driven rebuild.

Then the risk-specific ones. What retrofit credits exist, what documentation is required to claim them, and would a specific piece of work such as foundation bolting change the rate. Does the quote assume anything about my soil or my construction that I should verify. Are there exclusions for masonry veneer, chimneys, exterior features, or pre-existing damage. Is there a waiting period between binding the policy and coverage taking effect, which is common for catastrophe coverages and matters if you are buying after a newsworthy tremor. Get the answers in writing, and compare quotes only at identical deductible percentages and identical limits, since otherwise you are comparing different products.

The bottom line

Earthquake damage sits outside a standard homeowners policy under the earth movement exclusion, so covering it takes a deliberate second purchase: an endorsement on your existing policy where one is offered, or a standalone earthquake policy where it is not. What makes the product behave unlike anything else you own is the percentage deductible, commonly quoted in an illustrative 5% to 25% range and applied to your coverage limit rather than to your loss, often as separate thresholds for the dwelling, contents, and loss of use. That structure is why the same policy paid nothing on an illustrative $67,000 loss and $458,000 on an illustrative $560,000 one. It is solvency insurance, not damage insurance, and the right question is not whether it would help with cracked plaster but whether you could absorb losing the house without it. Convert your own percentage into dollars, compare it against a realistic loss, check whether land, pools, and exterior features are excluded, remember that fire following a quake usually belongs to your standard policy and that flooding after one belongs to flood insurance, and confirm your limits against a current rebuild cost with our coverage-sizing note. Then run your own thresholds in the companion below while the decision is still yours to make.

This coverage note is educational reading about how earthquake coverage is structured, priced, and settled, not insurance, legal, engineering, or financial advice, and it does not describe any policy you hold or any program available where you live. Whether a given earthquake loss is paid, and how much of it is paid, turns on your specific policy form, your deductible percentage and how many deductibles it produces, your limits, the exclusions attached, the findings of the adjuster and any engineer involved, and the law of your state. Every limit, percentage, threshold, premium, repair figure, and payout in this article is an illustrative example chosen to make the arithmetic visible, never a quote, never a prediction, and never a statement about seismic risk at your address. State earthquake programs, retrofit grants, availability, rating factors, and building code requirements change over time and differ substantially between states, insurers, and buildings, and none of them are described here with current specifics on purpose. Before buying, declining, or relying on earthquake coverage, obtain real quotes for your own building, read the policy wording in full, and speak with a licensed insurance professional and, where structural questions arise, a qualified structural engineer.

Edited by Hamza Hai, MBA · Editor

Hamza Hai is the editor of SumSured. She holds an MBA and reviews the site's articles against our editorial standards, checking that every figure is labelled for what it is, that nothing is presented as verified fact without a source the reader can check, and that the writing stays useful to a non-specialist.

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