Does Jarrell, TX need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Jarrell is Category A. 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 Jarrell sits at the 8th percentile for seismic hazard among 4,875 US cities.

How Jarrell compares

USGS's underlying values for Jarrell: 0.026g peak ground acceleration, 0.056g at short period, 0.037g at 1 second. Within Texas alone, Jarrell ranks 314 of 384 cities by seismic hazard - the 18th percentile in-state. Jarrell has a population of about 5,151.

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 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.

Insuring against this, not just retrofitting

A Jarrell 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 Jarrell's figures come from

Jarrell'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 Jarrell.