Birmingham, MI: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Birmingham in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Birmingham ranks above 27% of the 4,875 cities in this dataset for seismic hazard - the 27th percentile.

Birmingham by the numbers

USGS's underlying values for Birmingham: 0.046g peak ground acceleration, 0.094g at short period, 0.044g at 1 second. Within Michigan alone, Birmingham ranks 81 of 153 cities by seismic hazard - the 47th percentile in-state. Birmingham has a population of about 22,198.

What a retrofit costs in Birmingham

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.

What this means for insurance

A Birmingham 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 Birmingham's figures come from

Birmingham'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 Birmingham.