Jennings's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Jennings in Seismic Design Category D: High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. That puts Jennings in the 83th percentile nationally for seismic hazard - higher than 83% of the 4,875 US cities USGS was checked against here.

How Jennings compares

USGS's underlying values for Jennings: 0.232g peak ground acceleration, 0.411g at short period, 0.152g at 1 second. Within Missouri alone, Jennings ranks 31 of 135 cities by seismic hazard - the 78th percentile in-state. Jennings has a population of about 13,024.

What a retrofit costs in Jennings

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Missouri specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Missouri.

What this means for insurance

A Jennings homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Jennings's figures come from

Jennings's Category D and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category D does and doesn't tell you about Jennings.