Frisco, TX: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Frisco is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Frisco in the 36th percentile nationally for seismic hazard - higher than 36% of the 4,875 US cities USGS was checked against here.

Frisco by the numbers

USGS's underlying values for Frisco: 0.058g peak ground acceleration, 0.117g at short period, 0.058g at 1 second. Within Texas alone, Frisco ranks 44 of 384 cities by seismic hazard - the 89th percentile in-state. Frisco has a population of about 235,208.

Retrofit economics for Frisco

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 Texas 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 Texas.

Insuring against this, not just retrofitting

A Frisco 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 Frisco's figures come from

Frisco'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 Frisco.