Does Lancaster, NY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Lancaster 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 Lancaster sits at the 55th percentile for seismic hazard among 4,875 US cities.

Lancaster by the numbers

USGS's underlying values for Lancaster: 0.097g peak ground acceleration, 0.172g at short period, 0.045g at 1 second. Within New York alone, Lancaster ranks 114 of 170 cities by seismic hazard - the 33th percentile in-state. Lancaster has a population of about 10,094.

Retrofit economics for Lancaster

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by New York specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in New York.

Insuring against this, not just retrofitting

A Lancaster homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Lancaster's figures come from

Lancaster's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Lancaster.