Does Big Spring, TX need an earthquake retrofit?

Big Spring carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Big Spring sits at the 14th percentile for seismic hazard among 4,875 US cities.

Where Big Spring sits in Texas

USGS's underlying values for Big Spring: 0.041g peak ground acceleration, 0.084g at short period, 0.029g at 1 second. Within Texas alone, Big Spring ranks 208 of 384 cities by seismic hazard - the 46th percentile in-state. Big Spring has a population of about 22,541.

What a retrofit costs in Big Spring

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 Texas 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 Texas.

What this means for insurance

A Big Spring 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 Big Spring's figures come from

Big Spring's Category A 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 A does and doesn't tell you about Big Spring.