Shelton's Seismic Design Category, explained

Shelton carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Shelton ranks above 59% of the 4,875 cities in this dataset for seismic hazard - the 59th percentile.

How Shelton compares

USGS's underlying values for Shelton: 0.116g peak ground acceleration, 0.205g at short period, 0.054g at 1 second. Within Connecticut alone, Shelton ranks 6 of 21 cities by seismic hazard - the 75th percentile in-state. Shelton has a population of about 42,805.

What a retrofit costs in Shelton

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 Connecticut 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 Connecticut.

What this means for insurance

A Shelton 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 Shelton's figures come from

Shelton's Category B 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 B does and doesn't tell you about Shelton.