Clearwater's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Clearwater is Category A. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Clearwater sits at the 7th percentile for seismic hazard among 4,875 US cities.

Clearwater by the numbers

USGS's underlying values for Clearwater: 0.024g peak ground acceleration, 0.051g at short period, 0.03g at 1 second. Within Florida alone, Clearwater ranks 114 of 228 cities by seismic hazard - the 50th percentile in-state. Clearwater has a population of about 116,811.

Retrofit economics for Clearwater

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 Florida 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 Florida.

What this means for insurance

A Clearwater 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 Clearwater's figures come from

Clearwater's Category A 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 A does and doesn't tell you about Clearwater.