Newport Beach, CA: what USGS's seismic model says

Newport Beach 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, Newport Beach ranks above 92% of the 4,875 cities in this dataset for seismic hazard - the 92th percentile.

How Newport Beach compares

The raw figures: peak ground acceleration 0.57g, short-period spectral response 1.32g, 1-second spectral response 0.469g. Among 429 California cities in this dataset, Newport Beach ranks 267 for seismic hazard, the 38th percentile within the state. About 82,970 people live in Newport Beach, California.

Retrofit economics for Newport Beach

Because Newport Beach 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 Newport Beach 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 Newport Beach homeowner asking about it.

More on how this number was built

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