Does Cresskill, NJ need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Cresskill in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Cresskill sits at the 66th percentile for seismic hazard among 4,875 US cities.

How Cresskill compares

USGS's underlying values for Cresskill: 0.185g peak ground acceleration, 0.298g at short period, 0.061g at 1 second. Within New Jersey alone, Cresskill ranks 11 of 194 cities by seismic hazard - the 95th percentile in-state. Cresskill has a population of about 9,311.

Bracing and bolting: the actual cost

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 Jersey 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 Jersey.

Earthquake insurance for a Cresskill home

A Cresskill 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 Cresskill's figures come from

Cresskill'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 Cresskill.