Las Vegas's Seismic Design Category, explained

Las Vegas 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, Las Vegas ranks above 84% of the 4,875 cities in this dataset for seismic hazard - the 84th percentile.

Where Las Vegas sits in Nevada

The raw figures: peak ground acceleration 0.253g, short-period spectral response 0.568g, 1-second spectral response 0.194g. Among 12 Nevada cities in this dataset, Las Vegas ranks 7 for seismic hazard, the 45th percentile within the state. About 678,922 people live in Las Vegas, Nevada.

What a retrofit costs in Las Vegas

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

What this means for insurance

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 Las Vegas address.

More on how this number was built

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