Williams, CA: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Williams is 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, Williams ranks above 87% of the 4,875 cities in this dataset for seismic hazard - the 87th percentile.

How Williams compares

USGS's underlying values for Williams: 0.398g peak ground acceleration, 0.916g at short period, 0.364g at 1 second. Within California alone, Williams ranks 340 of 429 cities by seismic hazard - the 21th percentile in-state. Williams has a population of about 5,598.

Bracing and bolting: the actual cost

Cripple-wall bracing and foundation bolting - the scope California's Earthquake Brace + Bolt (EBB) grant funds - typically runs $3,000-$7,000 nationally. Every qualifying household gets a $3,000 base grant, which brings that down to $0-$4,000 out of pocket; income-eligible households ($89,040/year or under) can get up to $10,000 total, covering the retrofit outright in most cases.

What this means for insurance

Williams sits in CEA territory, but CEA earthquake coverage is agent-sold only, never direct - so the real first step for a homeowner here is a standard home-insurance quote, then asking that agent about CEA specifically.

Where Williams's figures come from

Williams's Category D and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. Full Brace + Bolt eligibility rules - beyond what this page can check from a ZIP code alone - are in the retrofit cost and grant guide.