Does Winslow, AZ need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Winslow 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 Winslow sits at the 59th percentile for seismic hazard among 4,875 US cities.

Where Winslow sits in Arizona

USGS's underlying values for Winslow: 0.115g peak ground acceleration, 0.251g at short period, 0.077g at 1 second. Within Arizona alone, Winslow ranks 23 of 57 cities by seismic hazard - the 61th percentile in-state. Winslow has a population of about 8,577.

What a retrofit costs in Winslow

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 Arizona 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 Arizona.

What this means for insurance

A Winslow 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 Winslow's figures come from

Winslow'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 Winslow.