North Haledon's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, North Haledon is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, North Haledon ranks above 65% of the 4,875 cities in this dataset for seismic hazard - the 65th percentile.

How North Haledon compares

The raw figures: peak ground acceleration 0.179g, short-period spectral response 0.289g, 1-second spectral response 0.06g. Among 194 New Jersey cities in this dataset, North Haledon ranks 61 for seismic hazard, the 69th percentile within the state. About 8,854 people live in North Haledon, New Jersey.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for New Jersey. 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 North Haledon address.

More on how this number was built

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