Does Perry, IA need an earthquake retrofit?

Perry 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. Rank it against the rest of the country and Perry sits at the 16th percentile for seismic hazard among 4,875 US cities.

How Perry compares

USGS's underlying values for Perry: 0.028g peak ground acceleration, 0.059g at short period, 0.048g at 1 second. Within Iowa alone, Perry ranks 64 of 85 cities by seismic hazard - the 25th percentile in-state. Perry has a population of about 8,046.

What a retrofit costs in Perry

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 Iowa 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 Iowa.

What this means for insurance

A Perry 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 Perry's figures come from

Perry'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 Perry.