Dunn, NC: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Dunn 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 Dunn sits at the 40th percentile for seismic hazard among 4,875 US cities.

Dunn by the numbers

USGS's underlying values for Dunn: 0.064g peak ground acceleration, 0.132g at short period, 0.064g at 1 second. Within North Carolina alone, Dunn ranks 99 of 147 cities by seismic hazard - the 33th percentile in-state. Dunn has a population of about 8,754.

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 North Carolina 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 North Carolina.

Earthquake insurance for a Dunn home

A Dunn 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 Dunn's figures come from

Dunn'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 Dunn.