2 county-level rules, plus city-specific rules for 1 city in Hamilton County, Ohio.
Verified from official government sources
Hamilton County has no countywide dark-sky lighting code. Shielding, fixture, and glare standards for outdoor lighting are adopted by individual cities, villages, and townships under their zoning authority (ORC Chapter 519 for townships).
ORC 519.02(A)
...the board of township trustees may regulate by resolution, in accordance with a comprehensive plan, the location, height, bulk, number of stories, and size of buildings and other structures... reasonable landscaping standards and architectural standards...
Hamilton County has no countywide light-trespass ordinance. Glare and spillover onto a neighbor's property are addressed by your city, village, or township zoning code, or as a private nuisance under Ohio common law.
1 cities in Hamilton County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
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