Bossier City's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Bossier City is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Bossier City ranks above 32% of the 4,875 cities in this dataset for seismic hazard - the 32th percentile.

How Bossier City compares

USGS's underlying values for Bossier City: 0.053g peak ground acceleration, 0.11g at short period, 0.069g at 1 second. Within Louisiana alone, Bossier City ranks 8 of 59 cities by seismic hazard - the 88th percentile in-state. Bossier City has a population of about 63,218.

What a retrofit costs in Bossier City

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.

Insuring against this, not just retrofitting

A Bossier City 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 Bossier City's figures come from

Bossier City'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 Bossier City.