Does Opelousas, LA need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Opelousas is Category B. 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 Opelousas sits at the 21th percentile for seismic hazard among 4,875 US cities.

How Opelousas compares

USGS's underlying values for Opelousas: 0.041g peak ground acceleration, 0.085g at short period, 0.056g at 1 second. Within Louisiana alone, Opelousas ranks 48 of 59 cities by seismic hazard - the 19th percentile in-state. Opelousas has a population of about 15,176.

What a retrofit costs in Opelousas

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.

Earthquake insurance for a Opelousas home

A Opelousas 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 Opelousas's figures come from

Opelousas'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 Opelousas.