Maximum lot coverage is a local zoning standard, not a county one. Townships set it under ORC 519.02, which authorizes regulating the "percentages of lot areas that may be occupied." Colerain caps accessory buildings at 30% of the rear yard.
Hamilton County does not impose a countywide lot-coverage percentage on incorporated land. ORC 519.02 empowers townships to regulate the percentage of a lot that structures may occupy, and cities and villages set their own coverage ratios by district. Colerain Township limits the total footprint of all accessory buildings to no more than 30% of the rear yard, and requires an accessory building's footprint to be no larger than the principal building's footprint. Overall lot-coverage or impervious-surface maxima for your zoning district are found in the local resolution, so check your specific district's standards.
Exceeding the district's coverage percentage results in denial of the zoning certificate and a required design change or variance, enforced by the local zoning inspector.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Backyard composting is legal in Hamilton County, and no county permit is needed for a home compost pile. Ohio bans yard waste from landfills (ORC 3734.121 / ...
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Hamilton County has no ordinance governing artificial turf in yards. Whether synthetic lawn is allowed, and any drainage or setback conditions, is set by you...
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Hamilton County does not require or restrict native-plant landscaping. You may plant native gardens and pollinator beds. The only limit is weed and nuisance ...
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Rain barrels and rainwater collection for outdoor use are legal in Hamilton County with no county permit. If harvested rainwater is plumbed for drinking or h...
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Hamilton County imposes no lawn-watering schedule. Ohio is not a drought-restricted state, so there is no odd/even or day-of-week watering rule. Your water u...
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Ohio's noxious-weed laws apply, not a county ordinance. On municipal land, ORC 731.51 orders weeds cut within five days of written notice; on unincorporated ...
See how Hamilton County's lot coverage limits rules stack up against other locations.
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