Does Crafton, PA need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Crafton in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Crafton ranks above 23% of the 4,875 cities in this dataset for seismic hazard - the 23th percentile.

How Crafton compares

USGS's underlying values for Crafton: 0.043g peak ground acceleration, 0.09g at short period, 0.045g at 1 second. Within Pennsylvania alone, Crafton ranks 131 of 193 cities by seismic hazard - the 32th percentile in-state. Crafton has a population of about 5,863.

Retrofit economics for Crafton

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 Pennsylvania 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 Pennsylvania.

What this means for insurance

A Crafton 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 Crafton's figures come from

Crafton'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 Crafton.