Glenarden, MD: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Glenarden is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Glenarden sits at the 42th percentile for seismic hazard among 4,875 US cities.

How Glenarden compares

The raw figures: peak ground acceleration 0.067g, short-period spectral response 0.131g, 1-second spectral response 0.043g. Among 46 Maryland cities in this dataset, Glenarden ranks 30 for seismic hazard, the 36th percentile within the state. About 6,394 people live in Glenarden, Maryland.

What a retrofit costs in Glenarden

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.

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 Glenarden address.

More on how this number was built

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