Toronto's Seismic Design Category, explained

Toronto carries Seismic Design Category B under USGS's ASCE 7-16 model. 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 Toronto sits at the 25th percentile for seismic hazard among 4,875 US cities.

Where Toronto sits in Ohio

USGS's underlying values for Toronto: 0.045g peak ground acceleration, 0.092g at short period, 0.046g at 1 second. Within Ohio alone, Toronto ranks 252 of 254 cities by seismic hazard - the 1th percentile in-state. Toronto has a population of about 5,187.

Bracing and bolting: the actual cost

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 Ohio 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 Ohio.

Earthquake insurance for a Toronto home

A Toronto 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 Toronto's figures come from

Toronto'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 Toronto.