Dobbs Ferry's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Dobbs Ferry is 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 Dobbs Ferry sits at the 66th percentile for seismic hazard among 4,875 US cities.

Where Dobbs Ferry sits in New York

USGS's underlying values for Dobbs Ferry: 0.185g peak ground acceleration, 0.298g at short period, 0.061g at 1 second. Within New York alone, Dobbs Ferry ranks 6 of 170 cities by seismic hazard - the 97th percentile in-state. Dobbs Ferry has a population of about 11,513.

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 Dobbs Ferry home

A Dobbs Ferry 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 Dobbs Ferry's figures come from

Dobbs Ferry'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 Dobbs Ferry.