Does East Grand Forks, MN need an earthquake retrofit?

East Grand Forks 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 East Grand Forks sits at the 2th percentile for seismic hazard among 4,875 US cities.

How East Grand Forks compares

The raw figures: peak ground acceleration 0.021g, short-period spectral response 0.045g, 1-second spectral response 0.017g. Among 155 Minnesota cities in this dataset, East Grand Forks ranks 145 for seismic hazard, the 6th percentile within the state. About 8,915 people live in East Grand Forks, Minnesota.

What a retrofit costs in East Grand Forks

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Minnesota. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Insuring against this, not just retrofitting

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a East Grand Forks address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced East Grand Forks's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.