How Much Is Earthquake Insurance in San Jose?

By the Candice Salcedo Insurance Team · Reviewed by Candice Salcedo, Licensed CA Agent (Lic. #0G36007) · Updated October 1, 2026 · 9 min read · San Jose, CA

How much is earthquake insurance in San Jose?

The short answer: There is no published San Jose or Santa Clara County average — the state collects earthquake premium data in aggregate only — so the usable answer is the CEA’s own estimator plus the five inputs that set your price: your dwelling limit, your deductible percentage, the year the home was built, its construction type, and your location’s modeled shaking risk.

We looked for a credible local number before writing this, and we want to tell you what we found rather than fill the gap with something that sounds authoritative.

The California Department of Insurance runs an annual earthquake data call, authorized by statute, that collects premium, exposure and policy counts from every insurer writing the coverage. That data goes to the California Earthquake Authority in aggregate form. There is no county-level or city-level publication. The CEA publishes rate changes and total premium volume, not a San Jose average. Neither the Insurance Information Institute nor the NAIC publishes one either.

So when a page confidently tells you earthquake insurance in San Jose costs a specific dollar figure, it's an estimate generated by a lead-generation site, not a rate filing. We'd rather hand you the two things that are real: the CEA's own premium estimator, which prices your actual address and coverage selections, and a clear explanation of the inputs it's asking about. Source: California Earthquake Authority premium estimator →

One data point that is published and worth holding onto: the CEA's statewide rate change effective January 2025 averaged 6.8%, which the agency described as roughly $70 a year for a typical homeowner. That tells you about the direction of the market, not about your house.

What actually sets your premium

The short answer: Location, year built, construction type, foundation, your dwelling limit and your deductible choice do most of the work — and the last two are the ones you control.

The CEA's published rating and eligibility materials point at a consistent set of factors:

• Location, down to the ZIP, reflecting seismic hazard. In Santa Clara County that means proximity to the fault systems running through the region.
• Year built. The 1980 line matters, and so does 1939 — both appear in CEA's own discount tiers.
• Construction type. Wood frame behaves differently from other construction in a quake, and the retrofit programs are written for wood-frame homes.
• Foundation type. Raised foundations, non-slab foundations and slab foundations price and qualify differently.
• Dwelling limit, which on a CEA policy has to match the dwelling limit on your companion homeowners policy.
• Deductible choice, which is the single biggest lever available to you.
• The optional limits you select for personal property, loss of use and building code upgrade.

One structural point people miss: you can't buy a CEA policy directly. The CEA isn't a direct seller — the policy is issued through a participating residential insurer, and your CEA policy and your homeowners policy have to be with the same company. That's part of why the conversation starts with your existing home policy rather than with earthquake coverage in isolation.

If your home insurance itself has been the moving target lately, our breakdown of what home insurance costs in San Jose covers the companion side of the bill.

The deductible is the lever — and on a Bay Area home it's a big one

The short answer: CEA deductibles are 5%, 10%, 15%, 20% or 25% of the dwelling limit, and the low end is restricted for homes over $1 million in coverage or pre-1980 homes without verified retrofit.

Earthquake deductibles are percentages, not flat dollars, and that's where Silicon Valley homeowners get a jolt. On a dwelling limit of $1.2 million, the menu looks like this:

The restriction is specific and it catches a lot of Santa Clara County homes. Homes with more than $1 million in dwelling coverage, and pre-1980 homes without verified seismic retrofit, are generally eligible only for 15%, 20% or 25%. Given local construction values, a great many San Jose homes sit above that $1 million line without the owner thinking of the house as a luxury property.

That reframes the decision. The question usually isn't “do I want a low deductible” — it's “what would I actually do if a quake caused $200,000 of damage, and does a policy that starts paying above $180,000 change my answer?” For some households it plainly does, because the catastrophic tail is the part that would force a sale. For others it doesn't. Both are legitimate conclusions, and we'd rather you reach one deliberately.

Two features soften the math. Loss of use carries no deductible at all on a CEA policy, with limits from $1,500 up to $100,000. And emergency repairs are covered with the first $1,500 deductible-free.

What a CEA policy actually includes

The short answer: Dwelling coverage matched to your home policy, personal property at $5,000 or $25,000, loss of use from $1,500 to $100,000 with no deductible, and $10,000 of building code upgrade included.

The structure is more modular than people expect, and some of the default limits are lower than they'd guess:

The personal property default is the one to look at twice. A $5,000 contents limit does not go far in a Bay Area household, and stepping to $25,000 is usually a modest change to the premium. Loss of use deserves the same attention — if your home is unlivable after a quake, you're renting in a market where that limit gets consumed quickly.

Building code upgrade matters more here than in newer parts of the state. If your home predates current seismic code, rebuilding it legally means rebuilding it to today's standard, and that delta is exactly what this coverage addresses.

Condo owners have a parallel version of this conversation, and the loss-assessment interaction is its own topic — we cover it in loss assessment coverage in California.

Retrofit discounts and the state grant program

The short answer: CEA's hazard reduction discount runs from 10% to 25% depending on foundation type and year built, and California's Earthquake Brace + Bolt program offers grants up to $3,000, or up to $7,000 for income-eligible homeowners.

This is the one place where spending money reliably lowers the premium and improves the outcome, so it's worth doing the arithmetic.

CEA's hazard reduction discount is tiered rather than flat:

To qualify, the home generally needs to be a one-to-four-unit dwelling built before 1980, wood framed, on a non-slab foundation, with the water heater properly secured. Verification runs through CEA's dwelling retrofit verification form, completed by a qualified inspection professional and submitted to your residential insurer. Source: California Earthquake Authority discounts →

On the cost side, the Earthquake Brace + Bolt program — run by the California Residential Mitigation Program, a joint effort of the CEA and Cal OES — offers grants up to $3,000 toward a qualifying retrofit, with a supplemental grant up to $7,000 for income-eligible homeowners. It's limited to wood-framed, pre-1980 homes with a raised foundation, in designated high-hazard ZIP codes, and registration opens only for a limited window each year. Check the current window before you plan around it.

The risk picture under Silicon Valley

The short answer: USGS puts the chance of a magnitude 6.7 or greater Bay Area earthquake in 30 years at 72%, and roughly nine in ten Californians carry no earthquake coverage at all.

The number most people have heard is the right one to start with. The U.S. Geological Survey's published forecast gives the San Francisco Bay region a 72% probability of at least one magnitude 6.7 or larger earthquake within 30 years, with a 51% chance of magnitude 7.0 or larger. Source: U.S. Geological Survey →

In September 2026, Bay Area news outlets reported a USGS recalculation raising that figure to roughly 74%. We're flagging it as news coverage rather than citing it as a government statistic, because USGS's own published forecast still carries 72% and we couldn't locate a corresponding USGS publication. The distinction doesn't change the decision, and we'd rather be precise about where a number comes from.

What makes this a Silicon Valley question specifically is the Hayward Fault, which last produced a major earthquake in 1868 — a magnitude 6.8 that damaged Hayward, Fremont, San Leandro, Oakland and Berkeley. USGS notes that intervals between major Hayward events have averaged roughly 150 years, and that Alameda County held about 24,000 people in 1868 against more than 2.4 million today.

Against that, the Department of Insurance has put the share of California homeowners and renters without earthquake coverage at nearly 90%. The CEA insures close to a million California homes and reported roughly $20 billion in claim-paying capacity in an April 2026 report to the Legislature. Those two facts sit oddly together, and they're the reason this article exists.

One piece of good news that often gets lost: California law requires homeowners and renters policies to cover fire damage caused by or following an earthquake. The shaking is excluded; the fire afterward is not. Our guide to earthquake insurance in the Bay Area walks through how CEA and private options compare.

How to decide without guessing

The short answer: Run the estimator with two or three deductibles, price the retrofit discount if your home qualifies, and judge the result against what an uninsured loss would do to your finances.

A workable sequence, in order:

Confirm the fire-following answer first. You already have that coverage. Knowing it narrows the question to structural shake damage, which is the expensive part but not the whole picture.

Run the estimator at more than one deductible. The spread between 15% and 25% on a Bay Area dwelling limit is large in both directions — premium and exposure. Seeing both numbers is what makes the choice real.

Check whether you're a retrofit candidate. Pre-1980, wood framed, raised foundation. If yes, price the retrofit against the discount and the grant, because the payback period is often shorter than people assume and the house ends up safer either way.

Size personal property and loss of use deliberately. The $5,000 contents default and the $1,500 loss-of-use floor are starting points, not recommendations.

Then ask the only question that matters. If a quake caused damage above your deductible, what would you do? If the answer is “sell,” or “we'd be in real trouble,” the coverage is doing something no other product does. If the answer is “we'd write a check,” that's a legitimate reason to skip it — made with the numbers in front of you.

We'll run the whole sequence with you. Our San Jose home insurance team handles the companion policy and the earthquake policy together, which is the only way the deductible math makes sense.

The bottom line

Nobody publishes a San Jose earthquake insurance average, and we're not going to pretend otherwise. What's public is more useful: a deductible menu from 5% to 25% with the low end restricted for homes over $1 million or unretrofitted pre-1980 construction, a retrofit discount worth up to 25%, state grants up to $3,000 — or $7,000 if you're income-eligible — and an official estimator that prices your actual address.

The decision comes down to one question: what would an uninsured shake loss do to you? In a region USGS gives a 72% chance of a magnitude 6.7 or larger quake inside 30 years, where nearly nine in ten households carry no coverage, that question deserves a deliberate answer rather than a default one. Send us your address and we'll run it properly with our San Jose home insurance team.