Published 2026-09-28 · Last updated 2026-09-28.
Earthquake insurance in California
What it covers — and what standard cover leaves out
Deductible basics — why percentages change the decision
CEA note — how the California Earthquake Authority works
The California Earthquake Authority is a publicly managed, privately funded organisation that provides residential earthquake cover through participating insurers — you buy a CEA policy through the company that sells your homeowners or renters cover, but the earthquake policy is a separate contract. CEA offers homeowners, renters and condo variants with different flexibility, and its dwelling limit generally matches the dwelling limit on the standard homeowners policy. Residential insurers in California are required to offer earthquake cover in writing on a regular cycle; that offer is the prompt to compare, not a recommendation to buy. Private carriers outside the CEA system also write standalone earthquake policies, sometimes with different deductible structures and combined limits, so a CEA quote and a private quote are worth comparing on identical limits and deductibles, not on premium alone. CEA options, limits and availability described here are general — check the California Department of Insurance and CEA for current details.
Who should think hardest about it
Think hardest if your home sits near a known fault zone, is built on a raised foundation, is older and unretrofitted, or would be financially devastating to rebuild after a major quake even with savings. Think differently if your home is newer, retrofitted, on a slab, or if your savings could absorb a major rebuild without cover — the decision is personal, and a general guide cannot make it for you. Renters and condo owners have a different question again: the landlord or association insures the building, but belongings and displacement costs are the tenant's or unit owner's own exposure, and CEA renters and condo variants address those specifically. Do not let a landlord's or association's earthquake decision substitute for your own belongings-and-displacement check.
What to check before you buy
Check five things in order. One, your current homeowners declarations page, to confirm the earthquake exclusion in your own wording. Two, the dwelling limit the earthquake policy would use, and whether it matches your homeowners limit. Three, the deductible percentage and the illustrative out-of-pocket figure it produces on that limit — write the arithmetic down, do not just note the percentage. Four, what personal property and loss-of-use cover the policy includes, and whether those carry separate deductibles. Five, whether seismic retrofitting — bolting, bracing or foundation work — would change your deductible options or premium, and what that work would cost against the saving. Get the answers in writing from a participating insurer or agent before deciding.
Mitigation and the wildfire connection
Earthquake and wildfire decisions often arrive together in California, because the same home can face both perils and both involve mitigation that insurers recognise. Wildfire mitigation — defensible space, ember-resistant vents, fire-rated roofing — is covered on the wildfire page in this cluster, and earthquake retrofitting is its structural cousin: both cost money upfront, both can change insurability or price, and neither is a substitute for cover. If you are weighing both, sequence the work by risk and by what your insurer confirms in writing, not by which peril made the news most recently.
ILLUSTRATIVE EXAMPLE — not a policy fact
An illustrative homeowner holds a dwelling limit of $500,000 and considers, hypothetically, a 15% earthquake deductible. The illustrative arithmetic is 15% × $500,000 = $75,000 out of pocket before earthquake cover pays. A quake causing illustrative damage below that figure would pay nothing under that deductible; a quake causing illustrative damage above it would pay the excess up to the limit, subject to policy terms. The percentages and limits are illustrative only, chosen to show how percentage deductibles work — they are not a CEA quote, not a recommendation, and not any real homeowner's deductible. Replace them with your own quoted options before deciding.