Does Rohnert Park, CA need an earthquake retrofit?

Rohnert Park carries Seismic Design Category D under USGS's ASCE 7-16 model. 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, Rohnert Park ranks above 97% of the 4,875 cities in this dataset for seismic hazard - the 97th percentile.

How Rohnert Park compares

The raw figures: peak ground acceleration 0.749g, short-period spectral response 1.782g, 1-second spectral response 0.677g. Among 429 California cities in this dataset, Rohnert Park ranks 139 for seismic hazard, the 68th percentile within the state. About 44,894 people live in Rohnert Park, California.

Retrofit economics for Rohnert Park

Because Rohnert Park is in California, the EBB grant applies if the ZIP code participates and the house qualifies (wood-framed house on a raised (not slab-on-grade) foundation, built before 1980): a $3,000-$7,000 bracing-and-bolting job drops to $0-$4,000 after the $3,000 base grant, or effectively free for income-eligible households getting the full $10,000.

Earthquake insurance for a Rohnert Park home

Earthquake coverage in California mostly runs through the California Earthquake Authority (CEA), sold only through licensed agents at CEA-participating insurers - there is no direct-to-consumer CEA policy. A general home-insurance quote is the practical starting point for a Rohnert Park homeowner asking about it.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Rohnert Park's numbers. The retrofit cost and grant guide covers every EBB eligibility rule, including the ones this page can't check.