Does Creedmoor, NC need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Creedmoor in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Creedmoor ranks above 33% of the 4,875 cities in this dataset for seismic hazard - the 33th percentile.

Creedmoor by the numbers

The raw figures: peak ground acceleration 0.055g, short-period spectral response 0.115g, 1-second spectral response 0.057g. Among 147 North Carolina cities in this dataset, Creedmoor ranks 124 for seismic hazard, the 16th percentile within the state. About 5,049 people live in Creedmoor, North Carolina.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for North Carolina. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Earthquake insurance for a Creedmoor home

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Creedmoor address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Creedmoor's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.