Does St. Helens, OR need an earthquake retrofit?

St. Helens 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. Nationally, St. Helens ranks above 87% of the 4,875 cities in this dataset for seismic hazard - the 87th percentile.

St. Helens by the numbers

USGS's underlying values for St. Helens: 0.382g peak ground acceleration, 0.835g at short period, 0.402g at 1 second. Within Oregon alone, St. Helens ranks 42 of 80 cities by seismic hazard - the 48th percentile in-state. St. Helens has a population of about 14,460.

What a retrofit costs in St. Helens

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 Oregon 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 Oregon.

Earthquake insurance for a St. Helens home

A St. Helens 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 St. Helens's figures come from

St. Helens's Category D 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 D does and doesn't tell you about St. Helens.