Does Lodi, NJ need an earthquake retrofit?

Lodi carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Lodi ranks above 66% of the 4,875 cities in this dataset for seismic hazard - the 66th percentile.

How Lodi compares

USGS's underlying values for Lodi: 0.183g peak ground acceleration, 0.295g at short period, 0.061g at 1 second. Within New Jersey alone, Lodi ranks 26 of 194 cities by seismic hazard - the 87th percentile in-state. Lodi has a population of about 26,358.

Retrofit economics for Lodi

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 Lodi home

A Lodi 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 Lodi's figures come from

Lodi'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 Lodi.