Cincinnati, OH Frost Depth & Snow Load: Frost Line Depth (2026)

Cincinnati publishes its footing depth in permit-centre handouts rather than in a design criteria table, and the requirement appears consistently across them: footings a minimum of 30 inches below grade, checked alongside soil bearing capacity. Its residential garage handout states the same depth for trench footings with block or poured concrete foundation walls. Thirty inches is the shallowest figure among the Ohio cities we cover, which fits Cincinnati sitting at the state's southern edge, Columbus and Dayton are 32 inches, Toledo 36. Two things are worth knowing about how Cincinnati frames it. The city does not use the phrase frost line depth, even though Ohio's code defines that column as the minimum depth of footing below finish grade, which is exactly what this is. And Cincinnati publishes no ground snow load or roof snow load at all, a search of its full handout index turns up neither.