Layton, UT: what USGS's seismic model says

Layton 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 Layton sits at the 93th percentile for seismic hazard among 4,875 US cities.

How Layton compares

USGS's underlying values for Layton: 0.611g peak ground acceleration, 1.338g at short period, 0.483g at 1 second. Within Utah alone, Layton ranks 37 of 95 cities by seismic hazard - the 62th percentile in-state. Layton has a population of about 84,348.

Retrofit economics for Layton

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 Utah 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 Utah.

What this means for insurance

A Layton 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 Layton's figures come from

Layton'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 Layton.