Does Sleepy Hollow, NY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Sleepy Hollow is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Sleepy Hollow in the 66th percentile nationally for seismic hazard - higher than 66% of the 4,875 US cities USGS was checked against here.

Where Sleepy Hollow sits in New York

The raw figures: peak ground acceleration 0.184g, short-period spectral response 0.297g, 1-second spectral response 0.062g. Among 170 New York cities in this dataset, Sleepy Hollow ranks 11 for seismic hazard, the 94th percentile within the state. About 11,427 people live in Sleepy Hollow, New York.

What a retrofit costs in Sleepy Hollow

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

Earthquake insurance for a Sleepy Hollow home

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 Sleepy Hollow address.

More on how this number was built

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