Does Jamestown, NY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Jamestown is Category A. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Jamestown sits at the 15th percentile for seismic hazard among 4,875 US cities.

Jamestown by the numbers

The raw figures: peak ground acceleration 0.053g, short-period spectral response 0.105g, 1-second spectral response 0.039g. Among 170 New York cities in this dataset, Jamestown ranks 170 for seismic hazard, the 0th percentile within the state. About 27,699 people live in Jamestown, New York.

Bracing and bolting: the actual cost

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 Jamestown 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 Jamestown address.

More on how this number was built

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