Does Johnson City, NY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Johnson City is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Johnson City ranks above 33% of the 4,875 cities in this dataset for seismic hazard - the 33th percentile.

Johnson City by the numbers

USGS's underlying values for Johnson City: 0.055g peak ground acceleration, 0.115g at short period, 0.045g at 1 second. Within New York alone, Johnson City ranks 162 of 170 cities by seismic hazard - the 5th percentile in-state. Johnson City has a population of about 14,698.

Retrofit economics for Johnson City

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.

What this means for insurance

A Johnson City 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 Johnson City's figures come from

Johnson City'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 Johnson City.