Does Loves Park, IL need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Loves Park 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 Loves Park sits at the 32th percentile for seismic hazard among 4,875 US cities.

How Loves Park compares

The raw figures: peak ground acceleration 0.053g, short-period spectral response 0.106g, 1-second spectral response 0.058g. Among 330 Illinois cities in this dataset, Loves Park ranks 292 for seismic hazard, the 12th percentile within the state. About 23,636 people live in Loves Park, Illinois.

Retrofit economics for Loves Park

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

Insuring against this, not just retrofitting

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 Loves Park address.

More on how this number was built

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