Red Bank, TN: what USGS's seismic model says
Red Bank carries Seismic Design Category C under USGS's ASCE 7-16 model. Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Nationally, Red Bank ranks above 79% of the 4,875 cities in this dataset for seismic hazard - the 79th percentile.
Red Bank by the numbers
USGS's underlying values for Red Bank: 0.296g peak ground acceleration, 0.46g at short period, 0.122g at 1 second. Within Tennessee alone, Red Bank ranks 73 of 104 cities by seismic hazard - the 30th percentile in-state. Red Bank has a population of about 12,073.
Retrofit economics for Red Bank
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 Tennessee 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 Tennessee.
What this means for insurance
A Red Bank 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 Red Bank's figures come from
Red Bank's Category C 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 C does and doesn't tell you about Red Bank.