Does Hoffman Estates, IL need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Hoffman Estates 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 Hoffman Estates sits at the 39th percentile for seismic hazard among 4,875 US cities.

How Hoffman Estates compares

USGS's underlying values for Hoffman Estates: 0.062g peak ground acceleration, 0.121g at short period, 0.062g at 1 second. Within Illinois alone, Hoffman Estates ranks 196 of 330 cities by seismic hazard - the 41th percentile in-state. Hoffman Estates has a population of about 50,920.

What a retrofit costs in Hoffman Estates

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 Illinois 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 Illinois.

What this means for insurance

A Hoffman Estates 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 Hoffman Estates's figures come from

Hoffman Estates's Category B 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 B does and doesn't tell you about Hoffman Estates.