Helotes, TX: what USGS's seismic model says

Helotes 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. Nationally, Helotes ranks above 5% of the 4,875 cities in this dataset for seismic hazard - the 5th percentile.

How Helotes compares

USGS's underlying values for Helotes: 0.023g peak ground acceleration, 0.049g at short period, 0.022g at 1 second. Within Texas alone, Helotes ranks 348 of 384 cities by seismic hazard - the 9th percentile in-state. Helotes has a population of about 10,223.

What a retrofit costs in Helotes

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 Helotes 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 Helotes's figures come from

Helotes'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 Helotes.