Sunset Hills, MO: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Sunset Hills in Seismic Design Category D: High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. Nationally, Sunset Hills ranks above 83% of the 4,875 cities in this dataset for seismic hazard - the 83th percentile.

Where Sunset Hills sits in Missouri

The raw figures: peak ground acceleration 0.248g, short-period spectral response 0.438g, 1-second spectral response 0.16g. Among 135 Missouri cities in this dataset, Sunset Hills ranks 21 for seismic hazard, the 85th percentile within the state. About 9,099 people live in Sunset Hills, Missouri.

Retrofit economics for Sunset Hills

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

Earthquake insurance for a Sunset Hills 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 Sunset Hills address.

More on how this number was built

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