Does Blaine, MN need an earthquake retrofit?

Blaine carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Blaine sits at the 4th percentile for seismic hazard among 4,875 US cities.

How Blaine compares

USGS's underlying values for Blaine: 0.022g peak ground acceleration, 0.047g at short period, 0.027g at 1 second. Within Minnesota alone, Blaine ranks 99 of 155 cities by seismic hazard - the 36th percentile in-state. Blaine has a population of about 75,172.

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 Minnesota 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 Minnesota.

Earthquake insurance for a Blaine home

A Blaine 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 Blaine's figures come from

Blaine's Category A 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 A does and doesn't tell you about Blaine.