Your homeowners policy does not cover earthquake damage. Not as an add-on you forgot to check, not buried in the fine print—it’s explicitly excluded across every major insurer. If an earthquake cracks your foundation, buckles your walls, or makes your home uninhabitable, you’ll pay for repairs out of pocket unless you bought separate earthquake insurance.
The short answer
Earthquake insurance covers structural damage to your home, built-in fixtures, and temporary living expenses if you’re displaced. It’s sold as a separate policy or endorsement to homeowners insurance, costs $100 to $1,600 per year depending on location, and carries a percentage deductible—typically 15% to 25% of your home’s insured value. That means a $400,000 home with a 15% deductible requires you to pay the first $60,000 of damage before coverage kicks in.
What earthquake insurance covers (and what it doesn’t)
Earthquake insurance pays for damage caused directly by seismic activity. That includes:
- Structural damage: foundation cracks, collapsed walls, roof damage
- Built-in fixtures: cabinets, countertops, permanently installed appliances
- Additional living expenses: hotel, meals, and other costs if your home is uninhabitable
- Personal property: limited coverage for belongings inside the home (often capped separately)
It does not cover:
- Landslides or ground subsidence unless caused directly by earthquake shaking (you may need separate coverage)
- Fire damage caused by earthquake—this falls to your homeowners fire insurance, not earthquake coverage
- Outdoor structures: swimming pools, detached garages, fences are often excluded or subject to the full deductible
- Vehicles or property outside the home
The fire exclusion surprises people. If an earthquake ruptures a gas line and your house catches fire, the fire damage is a homeowners claim, not an earthquake claim. You need both policies to be fully covered.
Source: California Earthquake Authority policy documents, National Association of Insurance Commissioners (NAIC) sample policy language.
The deductible structure most buyers don’t expect
Earthquake insurance uses a percentage deductible, not the flat dollar amount you’re used to with car or homeowners insurance. Instead of paying the first $1,000 or $2,500, you pay a percentage of your home’s insured value—typically 15% to 25%.
Here’s what that means in real dollars:
- $300,000 home, 15% deductible = $45,000 out of pocket before insurance pays anything
- $400,000 home, 15% deductible = $60,000 out of pocket
- $400,000 home, 25% deductible = $100,000 out of pocket
If your repair bill is $30,000 and your deductible is $45,000, you get zero. The deductible isn’t a down payment—it’s a threshold. Only damage above that amount is covered.
This structure is standard across the industry, set by state insurance regulators and catastrophic loss modeling. It’s not negotiable. You can choose a lower deductible (10% or even 5% in California), but premiums increase sharply.
The takeaway: earthquake insurance is most valuable if you have savings to cover the deductible, or if you’re in a high-risk zone where the chance of catastrophic damage justifies the cost.
Source: California Earthquake Authority rate filings, state insurance commissioner rulings (Washington, Oregon, Nevada).
What earthquake insurance costs by state
Premiums vary by location, proximity to fault lines, year your home was built, and construction type. Here are realistic ranges based on 2024–2026 rate filings:
California (highest risk):
- $400,000 home, 15% deductible: $800 to $1,600 per year
- Same home, 25% deductible: $400 to $800 per year
- Recent California rate filings reflect increases after seismic models were updated. Bay Area and Los Angeles metro homes have experienced steeper increases than inland areas.
Pacific Northwest (Washington, Oregon):
- $400,000 home, 15% deductible: $200 to $500 per year
- Rates are notably lower than California due to lower historical earthquake frequency, though the Cascadia Subduction Zone remains a documented long-term risk.
Mountain West (Nevada, Utah, Arizona, Colorado, Montana):
- $400,000 home, 15% deductible: $100 to $300 per year
- Coverage is widely available through standard insurers; no state program required.
Other states (low seismic risk):
- $400,000 home, 15% deductible: $50 to $200 per year
- Available but rarely marketed. In most low-risk areas, the deductible is so high relative to likely damage that coverage isn’t cost-effective.
Older homes built before modern seismic building codes can pay 20% to 40% more. ZIP code matters more than state—a home five miles from a fault line will cost significantly more than one 50 miles away.
Source: California Earthquake Authority, state insurance commissioners (Washington, Oregon, Nevada).
Earthquake insurance by state: coverage and availability
California
California is the hardest state to buy earthquake insurance. After the 1989 Loma Prieta earthquake, private insurers largely pulled out. The state created the California Earthquake Authority (CEA)—a quasi-public, not-for-profit insurer—to fill the gap.
- Who writes it: CEA is the primary option. A handful of Lloyd’s underwriters and specialty carriers also write policies, but availability is limited.
- Deductible options: 5%, 10%, 15%, 20%, or 25% of your home’s insured value.
- Availability: If your homeowners insurer has cancelled you, or if you have prior earthquake claims or code violations, CEA can deny coverage. This is the only state where getting coverage at all can be difficult.
Washington and Oregon
The private market functions in the Pacific Northwest. Most major carriers (State Farm, Allstate, USAA) offer earthquake coverage as an endorsement to your homeowners policy.
- Deductible options: Typically 15%, 20%, or 25%.
- Availability: Broadly available. Some mortgage lenders require it near the Puget Sound or other high-risk zones.
- No state program: You buy directly from your homeowners insurer or a private carrier.
Nevada, Utah, Arizona, Colorado, Montana
Earthquake insurance is available through standard carriers but rarely required by lenders.
- Deductible options: 15% to 25%.
- Availability: Easier to obtain than in California; pricing reflects lower risk.
Low-risk states
You can buy earthquake coverage in states with minimal seismic activity, but premiums are low ($50 to $200 per year) and deductibles are still 10% to 25%. Given the low probability of a damaging quake, most buyers skip it.
Source: State insurance commissioner offices, California Department of Insurance.
Earthquake insurance vs. homeowners coverage
| Feature | Homeowners Insurance | Earthquake Insurance |
|---|---|---|
| Covers earthquake damage? | No—explicit exclusion | Yes—primary coverage |
| Deductible | Flat $500 to $2,500 | 5% to 25% of home value |
| Typical premium | $800 to $2,000/year (varies widely) | $100 to $1,600/year (by state) |
| Additional living expenses | Covered if home uninhabitable | Covered in most policies |
| Availability | Widely available | Limited in California; broader elsewhere |
| Required by lenders? | Yes | Rarely (some high-risk zones) |
Earthquake is classified as a broad-form exclusion in every standard homeowners policy. That means it’s not an option or an oversight—it’s regulatory convention. Your homeowners policy will explicitly state: “loss caused by or resulting from earthquake is not covered.”
If you want earthquake coverage, you must buy it separately, either as a standalone policy or as an endorsement to your homeowners policy (in states where insurers offer it). For more on how endorsements work, see Homeowners Insurance Riders & Endorsements: What You Need.
What to watch for
Fire following earthquake isn’t covered by earthquake insurance. If an earthquake damages gas lines and your home catches fire, the fire damage falls under your homeowners policy, not earthquake coverage. This can create disputes if your homeowners coverage limits are too low. Keep both policies current.
Rates are rising. Recent rate adjustments in California and other states reflect updated risk models. Premiums are guaranteed only for the policy term—usually one year.
Availability can disappear. In California, if CEA reaches capacity or your risk profile changes (prior claims, code violations, certain retrofits not completed), you can be denied coverage or non-renewed. If you’re in a high-risk zone, don’t wait to apply.
Beware non-insurance “earthquake protection plans.” Some agents sell repair discount networks or service plans that aren’t insurance. They don’t cover structural damage and won’t pay out after a major quake. Buy earthquake insurance from a licensed carrier or the California Earthquake Authority.
FAQ
Do I need earthquake insurance if I’m not in California?
If you live near an active fault—Puget Sound, Salt Lake Valley, parts of the Mountain West—earthquake insurance is worth considering. Premiums are lower than California, and the Cascadia Subduction Zone (Pacific Northwest) is a known catastrophic risk. Outside those areas, the combination of low probability and high deductibles makes coverage less cost-effective.
Can I lower the deductible?
Yes, but premiums rise sharply. In California, a 5% deductible can cost two to three times what a 25% deductible costs. Most buyers choose 15% to balance premium and out-of-pocket risk.
Will my homeowners policy cover anything if there’s an earthquake?
Only fire damage caused by the earthquake. Structural damage, foundation cracks, and displacement costs are excluded. Earthquake is treated the same way flood is—it requires separate coverage. For more on coverage exclusions, see Flood Insurance Coverage Gaps: What Homeowners Policies Don’t Cover.
Is earthquake insurance required by mortgage lenders?
Rarely. Some lenders in high-risk California zones or near the Cascadia Subduction Zone may require it, but it’s not standard. Check your loan documents.
This is not insurance or financial advice. Coverage, premiums, and availability vary by state, insurer, and individual circumstances. Consult a licensed insurance agent or your state insurance commissioner for policies and rates specific to your location.