Does Windsor, WI need an earthquake retrofit?

Windsor carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Windsor in the 17th percentile nationally for seismic hazard - higher than 17% of the 4,875 US cities USGS was checked against here.

Windsor by the numbers

USGS's underlying values for Windsor: 0.034g peak ground acceleration, 0.07g at short period, 0.046g at 1 second. Within Wisconsin alone, Windsor ranks 79 of 157 cities by seismic hazard - the 50th percentile in-state. Windsor has a population of about 10,005.

Retrofit economics for Windsor

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.

What this means for insurance

A Windsor 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 Windsor's figures come from

Windsor'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 Windsor.