Great Neck's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Great Neck is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Great Neck in the 64th percentile nationally for seismic hazard - higher than 64% of the 4,875 US cities USGS was checked against here.

How Great Neck compares

USGS's underlying values for Great Neck: 0.17g peak ground acceleration, 0.279g at short period, 0.059g at 1 second. Within New York alone, Great Neck ranks 47 of 170 cities by seismic hazard - the 73th percentile in-state. Great Neck has a population of about 11,075.

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 York 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 York.

Earthquake insurance for a Great Neck home

A Great Neck 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 Great Neck's figures come from

Great Neck'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 Great Neck.