Lynden, WA: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Lynden is Category D. 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 Lynden sits at the 88th percentile for seismic hazard among 4,875 US cities.

Where Lynden sits in Washington

USGS's underlying values for Lynden: 0.405g peak ground acceleration, 0.941g at short period, 0.331g at 1 second. Within Washington alone, Lynden ranks 86 of 125 cities by seismic hazard - the 31th percentile in-state. Lynden has a population of about 16,783.

What a retrofit costs in Lynden

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 Lynden 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 Lynden's figures come from

Lynden'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 Lynden.