Does Barnstable Town, MA need an earthquake retrofit?

Barnstable Town 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. That puts Barnstable Town in the 52th percentile nationally for seismic hazard - higher than 52% of the 4,875 US cities USGS was checked against here.

How Barnstable Town compares

The raw figures: peak ground acceleration 0.085g, short-period spectral response 0.16g, 1-second spectral response 0.049g. Among 58 Massachusetts cities in this dataset, Barnstable Town ranks 53 for seismic hazard, the 9th percentile within the state. About 49,831 people live in Barnstable Town, Massachusetts.

Retrofit economics for Barnstable Town

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 Barnstable Town 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 Barnstable Town address.

More on how this number was built

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