Does Lauderdale-by-the-Sea, FL need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Lauderdale-by-the-Sea in Seismic Design Category A: Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Lauderdale-by-the-Sea sits at the 1th percentile for seismic hazard among 4,875 US cities.

How Lauderdale-by-the-Sea compares

The raw figures: peak ground acceleration 0.02g, short-period spectral response 0.043g, 1-second spectral response 0.022g. Among 228 Florida cities in this dataset, Lauderdale-by-the-Sea ranks 197 for seismic hazard, the 14th percentile within the state. About 6,365 people live in Lauderdale-by-the-Sea, Florida.

Bracing and bolting: the actual cost

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

Insuring against this, not just retrofitting

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 Lauderdale-by-the-Sea address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Lauderdale-by-the-Sea'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.