Rochester Hills's Seismic Design Category, explained

Rochester Hills 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 Rochester Hills sits at the 25th percentile for seismic hazard among 4,875 US cities.

Rochester Hills by the numbers

USGS's underlying values for Rochester Hills: 0.044g peak ground acceleration, 0.089g at short period, 0.043g at 1 second. Within Michigan alone, Rochester Hills ranks 93 of 153 cities by seismic hazard - the 39th percentile in-state. Rochester Hills has a population of about 78,330.

What a retrofit costs in Rochester Hills

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 Michigan 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 Michigan.

Earthquake insurance for a Rochester Hills home

A Rochester Hills 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 Rochester Hills's figures come from

Rochester Hills'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 Rochester Hills.