Does Seaside, OR need an earthquake retrofit?

Seaside carries Seismic Design Category D under USGS's ASCE 7-16 model. High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. Rank it against the rest of the country and Seaside sits at the 94th percentile for seismic hazard among 4,875 US cities.

Seaside by the numbers

The raw figures: peak ground acceleration 0.652g, short-period spectral response 1.297g, 1-second spectral response 0.681g. Among 80 Oregon cities in this dataset, Seaside ranks 8 for seismic hazard, the 91th percentile within the state. About 7,110 people live in Seaside, Oregon.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Oregon. 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 Seaside address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Seaside'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.