Does Salisbury, MD need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Salisbury is Category A. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. That puts Salisbury in the 14th percentile nationally for seismic hazard - higher than 14% of the 4,875 US cities USGS was checked against here.

Salisbury by the numbers

The raw figures: peak ground acceleration 0.047g, short-period spectral response 0.097g, 1-second spectral response 0.038g. Among 46 Maryland cities in this dataset, Salisbury ranks 43 for seismic hazard, the 7th percentile within the state. About 33,616 people live in Salisbury, Maryland.

What a retrofit costs in Salisbury

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.

Earthquake insurance for a Salisbury 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 Salisbury address.

More on how this number was built

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