Does South Lake Tahoe, CA need an earthquake retrofit?
USGS's ASCE 7-16 seismic design model - the same standard building codes use - places South Lake Tahoe 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. That puts South Lake Tahoe in the 93th percentile nationally for seismic hazard - higher than 93% of the 4,875 US cities USGS was checked against here.
Where South Lake Tahoe sits in California
The raw figures: peak ground acceleration 0.599g, short-period spectral response 1.397g, 1-second spectral response 0.487g. Among 429 California cities in this dataset, South Lake Tahoe ranks 248 for seismic hazard, the 42th percentile within the state. About 21,225 people live in South Lake Tahoe, California.
What a retrofit costs in South Lake Tahoe
Because South Lake Tahoe 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.
Insuring against this, not just retrofitting
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 South Lake Tahoe homeowner asking about it.
More on how this number was built
The methodology guide covers exactly how USGS's public design-maps API produced South Lake Tahoe's numbers. The retrofit cost and grant guide covers every EBB eligibility rule, including the ones this page can't check.