Newton, MA: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Newton is 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 Newton sits at the 62th percentile for seismic hazard among 4,875 US cities.

Where Newton sits in Massachusetts

The raw figures: peak ground acceleration 0.154g, short-period spectral response 0.262g, 1-second spectral response 0.065g. Among 58 Massachusetts cities in this dataset, Newton ranks 27 for seismic hazard, the 54th percentile within the state. About 90,700 people live in Newton, 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 Newton 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 Newton address.

More on how this number was built

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