How big is the earthquake risk in San Diego, and do I need earthquake insurance?
Real but slow-moving: the Rose Canyon fault runs right under La Jolla, Old Town, downtown and Coronado and is capable of about a magnitude 6.9 quake, which it produces on average every ~700 years; standard homeowners and renters policies don't cover earthquake damage, so coverage means a separate policy, usually through the California Earthquake Authority.
- Local fault
- Rose Canyon
- Scenario quake
- M6.9 (USGS / EERI)
- CEA deductibles
- 5% – 25%
- ShakeOut drill
- Thu, Oct 15, 2026
The short version
- The Rose Canyon fault runs from offshore through Coronado, under downtown and along I-5, and beneath Mount Soledad before heading back offshore.
- SDSU geologist Thomas Rockwell's research puts its last major rupture "likely in the 1700s" and its average recurrence at about 700 years — averages, not a schedule.
- USGS modeled a magnitude 6.9 scenario on a 65-km stretch of the fault just offshore of San Diego and Tijuana.
- CEA homeowners policies carry deductibles of 5%, 10%, 15%, 20% or 25% of the dwelling limit; the lowest two aren't available for homes over $1 million or unretrofitted older frame houses.
- The Great California ShakeOut drill is Thursday, October 15, 2026: practice Drop, Cover and Hold On.
People moving from elsewhere in California often assume San Diego is the quiet corner of earthquake country. It's quieter than Los Angeles or the Bay Area, but the main local fault isn't out in the desert — it runs directly beneath some of the most expensive and densely built parts of the city.
Where the Rose Canyon fault runs
Route as described by SDSU's Thomas Rockwell (Times of San Diego, May 2026). A labelled list, not a map — use the USGS fault map for your address.
San Diego's earthquake timeline
Times of San Diego (Rockwell research); USGS scenario (2019); California Department of Education ShakeOut notice.
“Even though the Rose Canyon fault ruptures on average every seven hundred years, it doesn't mean it couldn't happen sooner than that.”
Thomas Rockwell, San Diego State University (Times of San Diego, May 2026)
Your insurance almost certainly excludes it
Regular policy vs. earthquake policy
| Homeowners / renters policy | CEA earthquake policy | |
|---|---|---|
| Earthquake shaking damage | Excluded | Covered after a 5%–25% deductible on the dwelling |
| Fire after an earthquake | Generally covered by the fire portion — check your policy | — |
| Where to buy | Already have it | Through a participating home insurer |
| Belongings | — | $5,000 or $25,000 limits |
| Living expenses | — | $1,500–$100,000 loss-of-use, no deductible |
The deductible is the part that surprises people. On a house with a $900,000 dwelling limit, a 15% deductible means the first $135,000 of damage is yours. That's why many owners think of earthquake insurance as protection against losing the house outright, not against cracked drywall. CEA does pay the first $1,500 of emergency repairs with no deductible, and it offers building-code upgrade coverage after the deductible is met.
- 01
Get the MyShake app or turn on phone alerts
California's earthquake early warning can give seconds of notice — enough to drop and cover.
- 02
Practice on October 15
Drop to your hands and knees, cover your head and neck, hold on until the shaking stops. Don't run outside.
- 03
Secure the heavy stuff
Strap water heaters, bookcases and TVs; latch cabinets.
- 04
Price a policy
CEA's premium calculator shows options by deductible for your ZIP and home.
KEEP READING
SOURCES
Everything above traces back to one of these. Follow them — if one has changed and we haven't, that's our mistake, not yours.
California Earthquake Authority · 2026-09-29
Deductible options and restrictions; coverage limits; emergency repairs
U.S. Geological Survey · 2019-08-23
M6.9, 65-km rupture offshore San Diego and Tijuana
Times of San Diego · 2026-05-15
Route, 1700s rupture, ~700-yr average, 1862 quake, Rockwell quote
California Department of Education · 2026-08-28
October 15, 2026; Drop, Cover and Hold On