Does Aberdeen, WA need an earthquake retrofit?

Aberdeen 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, Aberdeen ranks above 96% of the 4,875 cities in this dataset for seismic hazard - the 96th percentile.

Aberdeen by the numbers

USGS's underlying values for Aberdeen: 0.714g peak ground acceleration, 1.515g at short period, 0.69g at 1 second. Within Washington alone, Aberdeen ranks 3 of 125 cities by seismic hazard - the 98th percentile in-state. Aberdeen has a population of about 17,044.

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 Washington 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 Washington.

What this means for insurance

A Aberdeen 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 Aberdeen's figures come from

Aberdeen'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 Aberdeen.