Montevallo, AL: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Montevallo in Seismic Design Category C: Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Rank it against the rest of the country and Montevallo sits at the 75th percentile for seismic hazard among 4,875 US cities.

Montevallo by the numbers

USGS's underlying values for Montevallo: 0.164g peak ground acceleration, 0.28g at short period, 0.095g at 1 second. Within Alabama alone, Montevallo ranks 30 of 107 cities by seismic hazard - the 73th percentile in-state. Montevallo has a population of about 7,761.

Bracing and bolting: the actual cost

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 Alabama 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 Alabama.

Earthquake insurance for a Montevallo home

A Montevallo 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 Montevallo's figures come from

Montevallo's Category C 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 C does and doesn't tell you about Montevallo.