Berlin, WI: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Berlin is Category A. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. That puts Berlin in the 9th percentile nationally for seismic hazard - higher than 9% of the 4,875 US cities USGS was checked against here.

How Berlin compares

USGS's underlying values for Berlin: 0.027g peak ground acceleration, 0.056g at short period, 0.04g at 1 second. Within Wisconsin alone, Berlin ranks 104 of 157 cities by seismic hazard - the 34th percentile in-state. Berlin has a population of about 5,607.

Retrofit economics for Berlin

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 Wisconsin 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 Wisconsin.

Earthquake insurance for a Berlin home

A Berlin 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 Berlin's figures come from

Berlin's Category A 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 A does and doesn't tell you about Berlin.