Providence, RI: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Providence is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Providence in the 58th percentile nationally for seismic hazard - higher than 58% of the 4,875 US cities USGS was checked against here.

How Providence compares

USGS's underlying values for Providence: 0.109g peak ground acceleration, 0.199g at short period, 0.055g at 1 second. Within Rhode Island alone, Providence ranks 5 of 8 cities by seismic hazard - the 43th percentile in-state. Providence has a population of about 194,706.

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 Rhode Island 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 Rhode Island.

What this means for insurance

A Providence 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 Providence's figures come from

Providence'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 Providence.