Guadalupe's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Guadalupe in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Guadalupe sits at the 49th percentile for seismic hazard among 4,875 US cities.

Guadalupe by the numbers

The raw figures: peak ground acceleration 0.077g, short-period spectral response 0.176g, 1-second spectral response 0.064g. Among 57 Arizona cities in this dataset, Guadalupe ranks 52 for seismic hazard, the 9th percentile within the state. About 5,197 people live in Guadalupe, Arizona.

What a retrofit costs in Guadalupe

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

What this means for insurance

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 Guadalupe address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Guadalupe'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.