Patchogue's Seismic Design Category, explained

Patchogue 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. Nationally, Patchogue ranks above 56% of the 4,875 cities in this dataset for seismic hazard - the 56th percentile.

How Patchogue compares

The raw figures: peak ground acceleration 0.101g, short-period spectral response 0.183g, 1-second spectral response 0.049g. Among 170 New York cities in this dataset, Patchogue ranks 109 for seismic hazard, the 36th percentile within the state. About 12,447 people live in Patchogue, New York.

What a retrofit costs in Patchogue

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.

What this means for insurance

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 Patchogue address.

More on how this number was built

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