Earthquake damage is an exclusion on standard homeowners, renters and condo policies. Not limited, not subject to a different deductible. Excluded.
Covering it requires a separate policy or an endorsement, and that coverage is structured differently from the policy it sits alongside in ways worth understanding before you need it.
What is and is not excluded
The exclusion covers earth movement, which is generally broader than earthquakes alone. Depending on the policy wording it can reach landslide, mudflow, earth sinking, rising and shifting, and in some policies sinkholes, though sinkhole treatment varies and some states address it specifically.
One important carve-out exists in most policies. Fire following an earthquake is generally covered by the standard homeowners policy, even though the shaking damage is not. So if a quake ruptures a gas line and the house burns, the fire damage is typically a homeowners claim while the structural shaking damage is not. Confirm this against your own policy language, since the wording matters.
The same logic often applies to a resulting water loss from a burst pipe, though again the policy language governs.
Percentage deductibles
This is the first structural difference, and it surprises people.
Earthquake deductibles are generally expressed as a percentage of the coverage amount rather than a flat dollar figure. Industry sources describe deductibles commonly ranging from about 2 to 20 percent of the structure's replacement value, with insurers in higher-risk states such as Washington, Nevada and Utah frequently setting minimums around 10 percent.
The mechanic is the same one that applies to hurricane deductibles: the percentage applies to your coverage limit, not to the size of the claim. A partial loss is measured against a deductible calculated from the full insured value.
The practical consequence is that moderate damage may fall entirely within the deductible. Earthquake coverage is generally protection against a severe loss rather than a mechanism for repairing cracked drywall.
Separate deductibles for different coverages
The second structural difference. Rather than one deductible for the whole loss, an earthquake policy may apply separate deductibles to:
- The dwelling
- Personal property
- Other structures such as detached garages, fences and pools
This matters after a moderate event. If the dwelling escapes serious damage but contents are destroyed, a policy with a single dwelling-based deductible may pay nothing, while one with a separate contents deductible may respond. Some programs offer this specifically as an option.
The 72-hour clause
Earthquakes come in sequences, and policies address that with a time-based definition of a single event.
Shocks occurring within a 72-hour period are typically treated as one event with one set of deductibles. Damage from aftershocks beyond that window can constitute a separate event, triggering a second claim and a second deductible.
This cuts both ways, and it is worth documenting damage with dates and photographs as a sequence unfolds.
The California Earthquake Authority, as an example of structure
California's arrangement is the most developed and illustrates how these programs work, though the details are specific to California and change over time.
The CEA is a state-established program, and CEA policies are purchased through your residential insurer rather than directly. Structural features worth knowing as a model:
- Deductible options span a band, described by the CEA in a range from 5 to 25 percent, with eligibility restrictions that limit higher-value dwellings and certain older raised-foundation homes without verified retrofit to the higher options only.
- The deductible is subtracted from the claim rather than paid out of pocket before the insurer responds, which is a meaningful difference from how people often imagine deductibles working.
- Some coverages sit outside the deductible entirely, including loss of use and an initial amount of emergency repairs.
- Separate policy tiers exist, with broader versions adding coverage for breakable contents and exterior masonry veneer.
- Renters and condo owners have their own versions, with deductibles calculated against personal property or building property limits respectively.
Do not rely on this description for current terms. Limits, options and eligibility change, and the CEA and your insurer are the authorities. Other states have their own markets and arrangements, and terms differ.
Where to buy it
Your existing insurer may offer earthquake coverage as an endorsement or place it through an affiliated program. This is the usual first stop.
A state program, where one exists, accessed through a participating insurer.
The private market, including specialty and surplus lines carriers, particularly for higher-value homes or where a program's limits are insufficient. Note that surplus lines placements are not backed by state guaranty associations. See admitted vs surplus lines carriers.
Retrofitting
Structural retrofit work can reduce both damage and, in some places, what you pay.
Common measures on older homes include bolting the frame to the foundation, bracing cripple walls, securing water heaters, and addressing soft-story conditions in buildings with garages or open ground floors.
Whether retrofitting produces a rating credit, and how it is verified, varies by program and by state. Some jurisdictions run grant programs for retrofit work. Your state's Department of Insurance or emergency management agency is the place to ask.
Non-structural measures matter too and cost little: securing bookcases and heavy furniture to walls, using museum putty on shelved items, and fitting cabinet latches. Those reduce the contents damage that a dwelling-based deductible may never reach.
Deciding
Points to weigh with a licensed agent:
- Your local seismic hazard, which is not confined to the states people associate with earthquakes. State geological surveys and the US Geological Survey publish hazard information.
- Your home's construction and age, since older unreinforced masonry and unretrofitted wood-frame homes behave very differently.
- Whether you could absorb the deductible, given that it is a percentage of your coverage rather than a flat sum.
- What a total loss would mean, since the mortgage survives the house.
- Whether contents coverage with its own deductible is available and worth having.
The honest framing is that earthquake coverage is catastrophe protection with a high retention. That makes it a poor fit for someone expecting help with minor damage, and potentially valuable for someone whose exposure is the loss of the house.
Related reading: what homeowners insurance covers, hurricane, wind and hail deductibles, and flood insurance and the NFIP, since the three major excluded perils work in comparable ways.
Program terms, deductible options, eligibility, retrofit credits and availability vary by state, by program and by insurer, and change over time. Your policy documents control. For your own property, consult a licensed agent, your state's Department of Insurance, or the relevant state program. You can also request home insurance quotes and get connected with licensed providers who cover your area.