カリフォルニア地震庁(CEA)の説明

What Is the California Earthquake Authority?

The California Earthquake Authority (CEA) is a publicly managed, largely privately funded entity created by the California State Legislature in 1996 in response to a near-collapse of the residential 地震保険地震による損害を補償する専門の保険で、通常は標準的な住宅保険とは別の契約として加入する。日本やトルコなど一部の国では加入が義務化されている。 market following the 1994 Northridge earthquake. When Northridge caused over $12 billion in insured residential losses, many private insurers faced the prospect of insolvency if a larger earthquake occurred. Dozens of major carriers stopped writing homeowners policies in California entirely, creating a market crisis. The CEA was established to ensure that California homeowners would have ongoing access to earthquake insurance regardless of private market conditions.

The CEA is not a government agency in the traditional sense — California taxpayers are not on the hook if it becomes insolvent. Instead, it is funded by policyholder premiums and backed by participating insurance companies and private capital markets. As of recent reporting, the CEA has over $18 billion in claim-paying capacity, making it one of the largest earthquake insurers in the world by exposure.

How the CEA Works

Homeowners cannot purchase CEA policies directly from the CEA. Instead, coverage is sold through participating insurance companies — the same companies that write your homeowners policy. When you buy CEA earthquake coverage, your insurer collects the premium and manages the customer relationship, but the underlying risk and claims are handled by the CEA. If you file a claim, the CEA adjuster determines the loss amount based on CEA policy terms.

The CEA offers several policy options called "CEA Homeowners Choice" policies, which are modular in structure. The base policy covers dwelling damage, and policyholders can add separate modules for personal property, loss of use (temporary living expenses), and emergency repairs. Each module can be purchased independently, allowing homeowners to customize coverage to their budget and risk tolerance.

Deductibles and What They Mean in Practice

The 地震保険の自己負担額（控除額）保険適用が開始される前に契約者が自己負担しなければならない、保険評価額に対する割合。地震保険の自己負担額は通常10〜25%で、一般的な保険の免責額よりはるかに高い。 for CEA policies is expressed as a percentage of the dwelling's insured value, ranging from 5% to 25% in 5% increments. The lower the deductible percentage, the higher your annual premium. For a home insured at $500,000 with a 15% deductible, you would pay the first $75,000 in structural repair costs before the CEA contributes. This means CEA insurance functions more like a catastrophic loss backstop than traditional insurance — it is designed to protect against severe, potentially unrecoverable losses rather than minor damage.

Many Californians choose the 15% or 20% deductible to reduce premiums to an affordable level. Financial advisors generally recommend pairing this choice with an emergency fund specifically earmarked to cover the deductible obligation if an earthquake occurs. The 予想最大損失額（PML）単一の地震事象によって、保険ポートフォリオや不動産が被る可能性のある最大損失額の推定値。保険会社・再保険会社にとって重要な指標。 for many California homes in high-risk zones (particularly those on soft soil or older construction) regularly exceeds the deductible threshold, meaning that in a serious earthquake, the policy would ultimately pay out — but only after the homeowner absorbs that initial loss.

CEA Coverage Limits and Exclusions

CEA policies have specific sub-limits for each coverage component. Dwelling coverage can be set to match the insured value of your home under your homeowners policy. Personal property coverage has a default limit of $5,000 (with options to increase it to $100,000 or more). Loss-of-use coverage is available up to 20% of the dwelling limit, a critical feature given that major earthquake repairs can take 12–24 months to complete.

Important exclusions: the CEA does not cover damage to swimming pools, spas, fences, or landscaping. It does not cover vehicles (these are covered under auto comprehensive). Damage caused by 津波海底地震時の海底の急激な変位によって発生する一連の海の波。津波はジェット機並みの速度（時速700km以上）で海洋全域を伝わることがある。 is excluded — waves generated by an earthquake are classified as flood damage under NFIP. Land movement, including 液状化水を含んだ緩い土壌が強い揺れによって一時的に強度を失い、液体のように振る舞う現象。建物が地面に沈下・傾斜・崩壊することがある。 and 地震誘発地すべり地震の揺れによって引き起こされる、土砂や岩石の斜面下方への移動。地すべりは地域全体を埋没させることがあり、揺れそのものより多くの犠牲者を出すこともある。, is covered only if it results directly from earthquake shaking, and the policy language on this point has been the subject of disputes.

The Retrofit Connection

California has invested significantly in 耐震補強既存の建物の耐震性を向上させるための強化工事。鋼製ブレースの追加、基礎の補強、構造物と基礎のボルト固定などが一般的な手法である。 programs that interact directly with CEA pricing. The CEA's Brace and Bolt program provides grants up to $3,000 to eligible homeowners to retrofit certain types of older wood-frame homes. These retrofits — typically involving cripple wall bracing and foundation anchor bolts — reduce the probability and severity of earthquake damage and directly lower CEA premiums. Homes that have undergone qualifying retrofits may qualify for reduced rates in the CEA's risk tiering system.

Beyond Brace and Bolt, the CEA offers premium discounts for homes built on bedrock rather than soft soil, for newer construction meeting current 耐震基準建物の最低限の耐震安全性を確保するための、設計・建設に関する法的要件の体系。大地震で新たな脆弱性が明らかになるたびに更新される。 standards, and for homes located farther from active 断層線地表に現れた断層の痕跡で、線状または破砕された岩石の帯として視認できる。地質学者は活断層線を地図化し、周辺地域の地震リスクを評価する。 systems. Understanding these discount factors can help California homeowners reduce their annual premium cost while maintaining meaningful coverage.

CEA vs. Private Market Alternatives

A small number of private insurers still offer earthquake coverage in California outside the CEA framework, including specialty carriers like GeoVera, Palomar Specialty Insurance, and Jumpstart (which offers a parametric product that pays out automatically based on earthquake magnitude rather than assessed damage). These alternatives may offer lower deductibles, broader coverage terms, or parametric payout structures that appeal to specific homeowners. Comparing CEA quotes against private alternatives is worthwhile, particularly for homeowners with high-value properties or unusual construction types that the CEA's standardized products may not accommodate optimally.

CEA's Financial Stability

A common concern among potential buyers is whether the CEA would actually be able to pay claims after a major California earthquake. The CEA manages this through a layered funding structure: premiums, reserves, reinsurance purchased from private markets, and a $10.5 billion reinsurance tower. The CEA has conducted extensive financial modeling using probabilistic 地震リスク評価特定の地域や構造物について、地震ハザード・建物の脆弱性・想定される損失を評価する過程。ハザードマップ、建物台帳、被害モデルを組み合わせて行われる。 tools to ensure it can pay claims from any credible earthquake scenario, including a repeat of the 1906 San Francisco earthquake. While no insurer can guarantee solvency after every conceivable scenario, the CEA's claim-paying capacity is among the most robust of any regional earthquake insurer globally.