Brentwood, MO: what USGS's seismic model says

Brentwood carries Seismic Design Category D under USGS's ASCE 7-16 model. 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. Nationally, Brentwood ranks above 83% of the 4,875 cities in this dataset for seismic hazard - the 83th percentile.

How Brentwood compares

USGS's underlying values for Brentwood: 0.242g peak ground acceleration, 0.428g at short period, 0.156g at 1 second. Within Missouri alone, Brentwood ranks 25 of 135 cities by seismic hazard - the 82th percentile in-state. Brentwood has a population of about 8,111.

What a retrofit costs in Brentwood

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 Brentwood 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 Brentwood's figures come from

Brentwood'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 Brentwood.