Earthquake insurance in California
Why your homeowners policy excludes quakes, and how to cover the risk that defines California.
Why quakes are excluded
Earthquake is a catastrophic, correlated risk, so it is carved out of standard home and renters policies. You add it back with a dedicated earthquake policy or endorsement. Most California earthquake coverage is written through the California Earthquake Authority, offered alongside your home policy, though private markets also exist.
How the deductible works
Earthquake policies use a percentage deductible (for example, a percentage of your dwelling limit) rather than a flat dollar amount. That means the out-of-pocket cost before coverage pays can be substantial, which is central to deciding how much coverage makes sense for you.
Is it worth it?
It depends on your risk and finances: your home's age and construction (older, unretrofitted homes are more vulnerable), your proximity to active faults, and how much equity you would lose if the home were badly damaged. We can help you weigh a CEA or private earthquake option alongside your home policy.
What a percentage deductible actually means in dollars
Earthquake deductibles are not flat amounts. They are a percentage of your dwelling limit, and the arithmetic surprises people.
| Dwelling limit (Coverage A) | 5% deductible | 10% deductible | 15% deductible | 25% deductible |
|---|---|---|---|---|
| $300,000 | $15,000 | $30,000 | $45,000 | $75,000 |
| $500,000 | $25,000 | $50,000 | $75,000 | $125,000 |
| $750,000 | $37,500 | $75,000 | $112,500 | $187,500 |
| $1,000,000 | $50,000 | $100,000 | $150,000 | $250,000 |
This is why earthquake coverage is best understood as protection against a catastrophic loss rather than a moderate one. On a 750,000 dollar dwelling limit with a 15 percent deductible, damage under about 112,500 dollars produces no payment at all - the policy is there for the event that takes the house, not the one that cracks the plaster.
The CEA lets you choose your deductible, and moving from 15 percent to 5 percent raises the premium substantially. Which way to go depends less on your appetite for risk than on whether you could actually absorb the deductible in cash after an event that may also have disrupted your income.
What earthquake coverage includes beyond the structure
A CEA policy is built in parts, and the parts other than the dwelling are frequently set too low by default.
- Dwelling - the structure itself, subject to the percentage deductible
- Personal property - often defaults to a low limit that will not replace a household's contents
- Loss of use - additional living expenses while the home is uninhabitable, which after a major quake can run long because contractors are scarce
- Building code upgrade - the cost of rebuilding to current code, which on an older California home is a large and easily overlooked number
- Emergency repairs and, on some policies, a small allowance for a personal property deductible that works differently from the dwelling one
A retrofit can also cut the premium. California's Earthquake Brace and Bolt program offers grants toward bolting an older house to its foundation and bracing a cripple wall, and CEA policyholders with a qualifying retrofit can earn a premium discount - so the work can pay for itself twice.
Frequently asked questions
Does homeowners insurance cover earthquakes in California?
No. Standard homeowners and renters policies exclude earthquake damage. You must add a separate earthquake policy or endorsement, often through the California Earthquake Authority.
What is the California Earthquake Authority?
The CEA is a publicly managed, privately funded provider of residential earthquake insurance, sold through participating insurers alongside your home policy. Private earthquake markets also exist.
Why are earthquake deductibles so high?
Earthquake policies use a percentage deductible based on your coverage limit rather than a flat amount, reflecting the catastrophic nature of the risk. This is a key factor in deciding whether to buy.
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