Does New Bedford, MA need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places New Bedford 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 New Bedford sits at the 57th percentile for seismic hazard among 4,875 US cities.

New Bedford by the numbers

The raw figures: peak ground acceleration 0.105g, short-period spectral response 0.191g, 1-second spectral response 0.053g. Among 58 Massachusetts cities in this dataset, New Bedford ranks 43 for seismic hazard, the 26th percentile within the state. About 101,318 people live in New Bedford, Massachusetts.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Massachusetts. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Earthquake insurance for a New Bedford home

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a New Bedford address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced New Bedford's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.