Does Saraland, AL need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Saraland is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Saraland in the 29th percentile nationally for seismic hazard - higher than 29% of the 4,875 US cities USGS was checked against here.

How Saraland compares

The raw figures: peak ground acceleration 0.048g, short-period spectral response 0.098g, 1-second spectral response 0.062g. Among 107 Alabama cities in this dataset, Saraland ranks 83 for seismic hazard, the 23th percentile within the state. About 16,458 people live in Saraland, Alabama.

Bracing and bolting: the actual cost

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

What this means for insurance

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 Saraland address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Saraland'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.