Windsor Heights, IA: what USGS's seismic model says

Windsor Heights 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. Nationally, Windsor Heights ranks above 16% of the 4,875 cities in this dataset for seismic hazard - the 16th percentile.

How Windsor Heights compares

The raw figures: peak ground acceleration 0.029g, short-period spectral response 0.061g, 1-second spectral response 0.051g. Among 85 Iowa cities in this dataset, Windsor Heights ranks 58 for seismic hazard, the 32th percentile within the state. About 5,106 people live in Windsor Heights, Iowa.

What a retrofit costs in Windsor Heights

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

Earthquake insurance for a Windsor Heights home

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 Windsor Heights address.

More on how this number was built

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