Does Plaquemine, LA need an earthquake retrofit?

Plaquemine 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. That puts Plaquemine in the 22th percentile nationally for seismic hazard - higher than 22% of the 4,875 US cities USGS was checked against here.

How Plaquemine compares

USGS's underlying values for Plaquemine: 0.042g peak ground acceleration, 0.087g at short period, 0.055g at 1 second. Within Louisiana alone, Plaquemine ranks 40 of 59 cities by seismic hazard - the 33th percentile in-state. Plaquemine has a population of about 5,985.

What a retrofit costs in Plaquemine

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 Plaquemine 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 Plaquemine's figures come from

Plaquemine'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 Plaquemine.