Does Newport, RI need an earthquake retrofit?

Newport 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. Rank it against the rest of the country and Newport sits at the 57th percentile for seismic hazard among 4,875 US cities.

How Newport compares

USGS's underlying values for Newport: 0.103g peak ground acceleration, 0.188g at short period, 0.052g at 1 second. Within Rhode Island alone, Newport ranks 8 of 8 cities by seismic hazard - the 0th percentile in-state. Newport has a population of about 24,482.

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.

Earthquake insurance for a Newport home

A Newport 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 Newport's figures come from

Newport'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 Newport.