Does North Attleborough Town, MA need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places North Attleborough Town 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 North Attleborough Town sits at the 59th percentile for seismic hazard among 4,875 US cities.

Where North Attleborough Town sits in Massachusetts

The raw figures: peak ground acceleration 0.115g, short-period spectral response 0.206g, 1-second spectral response 0.057g. Among 58 Massachusetts cities in this dataset, North Attleborough Town ranks 40 for seismic hazard, the 32th percentile within the state. About 31,210 people live in North Attleborough Town, 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.

Insuring against this, not just retrofitting

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 North Attleborough Town address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced North Attleborough Town'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.