How much does earthquake insurance cost?

Annual premiums typically range from $800 to $5,000+ for a standard home, depending on location and risk factors. In high-risk California areas, it can be 2–5% of dwelling coverage annually. Low-risk areas may be under $500/year.

What does earthquake insurance cover?

Earthquake insurance covers structural damage to your home, personal property damage, and additional living expenses if your home is uninhabitable. It does not cover vehicles, land damage, external fires caused by earthquake, or pre-existing damage.

Why are earthquake deductibles so high?

Earthquake insurance has high deductibles (10–25% of dwelling coverage) because earthquakes can cause widespread, correlated losses. A $400,000 home with a 15% deductible has a $60,000 out-of-pocket cost before insurance pays. This high deductible keeps premiums manageable.

Do I need earthquake insurance?

If you live in a seismically active area and can't afford to rebuild your home without insurance, yes. California, Oregon, Washington, Alaska, and parts of the Central US have significant seismic risk. Even moderate earthquakes can cause $50,000+ in damage.

What is the California Earthquake Authority (CEA)?

The CEA is a publicly managed, privately funded organization that provides residential earthquake insurance in California. It's not a government agency but works through participating insurance companies. About 10% of California homeowners carry CEA policies.

Does retrofitting lower my earthquake insurance cost?

Yes. Foundation bolting, cripple wall bracing, and water heater strapping can earn premium discounts of 5–20%. The CEA and FEMA offer retrofit grants for eligible homes. Retrofitting also significantly reduces actual earthquake damage.

Earthquake Insurance Cost Calculator

Estimate earthquake insurance premiums based on home value, location, soil type, foundation, and deductible. Compare costs for seismic coverage options.

Dwelling Coverage

Seismic Risk Zone

Foundation Type

Deductible %

Estimated Annual Premium

$3,432.00

$286.00/month

Deductible Amount

$60,000.00

15% of dwelling coverage

Planning notes, formulas, and examples

About the Earthquake Insurance Cost Calculator

Standard homeowners insurance does not cover earthquake damage. If you live in a seismically active area, you need a separate earthquake policy or endorsement. Premiums depend on your home's value, construction type, foundation, soil conditions, and proximity to fault lines.

Earthquake insurance is most common in California, Oregon, Washington, and other western states, but seismic risk exists throughout the U.S. The California Earthquake Authority (CEA) is the largest provider, but private options exist nationwide.

It gives educational estimates for earthquake insurance premiums. Actual rates depend on detailed seismic risk assessments and insurer-specific underwriting. Contact a licensed agent for carrier quotes.

When This Page Helps

A single major earthquake can cause catastrophic damage exceeding your home's value. Without earthquake insurance, you bear the full cost of repairs or rebuilding. This calculator helps you understand the cost of protection and plan your budget.

How to Use the Inputs

Enter your dwelling coverage amount.
Select your seismic risk zone (low, moderate, high).
Select your foundation type (slab, crawlspace, basement, etc.).
Select your deductible percentage (typically 5–25% of dwelling coverage).
Review the estimated annual premium and deductible amount in dollars.

Formula used

Base Rate = Dwelling Coverage × Rate per $1,000 (varies by zone)
Foundation Adjustment = Base Rate × Foundation Factor
Deductible Credit = Foundation Adjustment × (1 - Deductible Discount)
Estimated Annual Premium = Deductible Credit

Example Calculation

Result: $3,400/year with $60,000 deductible

With $400,000 dwelling coverage in a high seismic zone ($12/1,000 rate), crawlspace foundation (1.1x factor), and 15% deductible (0.65 credit factor): $4,800 × 1.1 × 0.65 ≈ $3,400/year. The 15% deductible = $60,000 out of pocket.

Tips & Best Practices

Earthquake deductibles are typically 5–25% of dwelling coverage — much higher than standard deductibles.
Retrofitting your foundation (bolting and bracing) can earn premium discounts and reduce damage risk.
Masonry chimneys, unreinforced walls, and older foundations are the most vulnerable to quake damage.
Consider a higher deductible to reduce premiums, but ensure you have the savings to cover it.
The CEA offers premium discounts for retrofit work, with grants available for older homes.
These are educational estimates only; consult with earthquake insurance specialists for actual pricing.

Earthquake Risk in the United States

While California gets the most attention, 42 of 50 U.S. states have some seismic risk. The New Madrid fault zone (central U.S.), Pacific Northwest subduction zone, and Wasatch Front (Utah) all pose significant earthquake threats.

Understanding Earthquake Deductibles

Earthquake deductibles are percentage-based, meaning they scale with your coverage. A 15% deductible on a $400,000 home is $60,000. This means earthquake insurance is really for catastrophic losses, not minor cosmetic damage.

Retrofitting for Safety and Savings

Seismic retrofitting can reduce both damage and insurance costs. The most cost-effective measures include bolting the house to its foundation, bracing cripple walls, securing water heaters, and strapping chimneys. Many states offer grants for these improvements.

Sources & Methodology

Last updated: February 9, 2026

Frequently Asked Questions

Annual premiums typically range from $800 to $5,000+ for a standard home, depending on location and risk factors. In high-risk California areas, it can be 2–5% of dwelling coverage annually. Low-risk areas may be under $500/year.