Does Alliance, OH need an earthquake retrofit?

Alliance 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. Nationally, Alliance ranks above 34% of the 4,875 cities in this dataset for seismic hazard - the 34th percentile.

How Alliance compares

USGS's underlying values for Alliance: 0.056g peak ground acceleration, 0.11g at short period, 0.048g at 1 second. Within Ohio alone, Alliance ranks 226 of 254 cities by seismic hazard - the 11th percentile in-state. Alliance has a population of about 21,523.

Retrofit economics for Alliance

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 Ohio 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 Ohio.

What this means for insurance

A Alliance 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 Alliance's figures come from

Alliance'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 Alliance.