Bronxville, NY: what USGS's seismic model says

Bronxville carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Bronxville in the 65th percentile nationally for seismic hazard - higher than 65% of the 4,875 US cities USGS was checked against here.

Bronxville by the numbers

USGS's underlying values for Bronxville: 0.182g peak ground acceleration, 0.293g at short period, 0.061g at 1 second. Within New York alone, Bronxville ranks 18 of 170 cities by seismic hazard - the 90th percentile in-state. Bronxville has a population of about 6,479.

Retrofit economics for Bronxville

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by New York specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in New York.

Insuring against this, not just retrofitting

A Bronxville homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Bronxville's figures come from

Bronxville's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Bronxville.