Does Beaufort, SC need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Beaufort in Seismic Design Category D: 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 Beaufort sits at the 86th percentile for seismic hazard among 4,875 US cities.

Where Beaufort sits in South Carolina

USGS's underlying values for Beaufort: 0.362g peak ground acceleration, 0.625g at short period, 0.198g at 1 second. Within South Carolina alone, Beaufort ranks 11 of 66 cities by seismic hazard - the 85th percentile in-state. Beaufort has a population of about 14,334.

Bracing and bolting: the actual cost

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 South Carolina 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 South Carolina.

Earthquake insurance for a Beaufort home

A Beaufort 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 Beaufort's figures come from

Beaufort'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 Beaufort.