Does Sauk Village, IL need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Sauk Village is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Sauk Village in the 38th percentile nationally for seismic hazard - higher than 38% of the 4,875 US cities USGS was checked against here.

How Sauk Village compares

USGS's underlying values for Sauk Village: 0.061g peak ground acceleration, 0.122g at short period, 0.067g at 1 second. Within Illinois alone, Sauk Village ranks 230 of 330 cities by seismic hazard - the 30th percentile in-state. Sauk Village has a population of about 9,627.

What a retrofit costs in Sauk Village

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.

Insuring against this, not just retrofitting

A Sauk Village 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 Sauk Village's figures come from

Sauk Village'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 Sauk Village.