Broussard, LA: what USGS's seismic model says

Broussard carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Broussard sits at the 21th percentile for seismic hazard among 4,875 US cities.

Where Broussard sits in Louisiana

USGS's underlying values for Broussard: 0.041g peak ground acceleration, 0.083g at short period, 0.052g at 1 second. Within Louisiana alone, Broussard ranks 47 of 59 cities by seismic hazard - the 21th percentile in-state. Broussard has a population of about 15,312.

Bracing and bolting: the actual cost

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 Louisiana 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 Louisiana.

What this means for insurance

A Broussard 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 Broussard's figures come from

Broussard's Category B 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 B does and doesn't tell you about Broussard.