Does Sachse, TX need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Sachse in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Sachse ranks above 31% of the 4,875 cities in this dataset for seismic hazard - the 31th percentile.

Sachse by the numbers

The raw figures: peak ground acceleration 0.052g, short-period spectral response 0.107g, 1-second spectral response 0.057g. Among 384 Texas cities in this dataset, Sachse ranks 75 for seismic hazard, the 81th percentile within the state. About 33,008 people live in Sachse, Texas.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Texas. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Earthquake insurance for a Sachse home

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Sachse address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Sachse's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.