Does West Allis, WI need an earthquake retrofit?

West Allis 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, West Allis ranks above 19% of the 4,875 cities in this dataset for seismic hazard - the 19th percentile.

How West Allis compares

The raw figures: peak ground acceleration 0.037g, short-period spectral response 0.076g, 1-second spectral response 0.048g. Among 157 Wisconsin cities in this dataset, West Allis ranks 41 for seismic hazard, the 74th percentile within the state. About 59,784 people live in West Allis, Wisconsin.

Bracing and bolting: the actual cost

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

Earthquake insurance for a West Allis 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 West Allis address.

More on how this number was built

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