La Plata's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places La Plata in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts La Plata in the 44th percentile nationally for seismic hazard - higher than 44% of the 4,875 US cities USGS was checked against here.

La Plata by the numbers

The raw figures: peak ground acceleration 0.069g, short-period spectral response 0.134g, 1-second spectral response 0.044g. Among 46 Maryland cities in this dataset, La Plata ranks 18 for seismic hazard, the 62th percentile within the state. About 11,374 people live in La Plata, Maryland.

What a retrofit costs in La Plata

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Maryland. 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 La Plata address.

More on how this number was built

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