Cincinnati's mayor wants to make ADU construction as easy as possible:
https://www.bizjournals.com/cincinna...nny-flats.html
Cincinnati Councilman Mark Jeffreys and Mayor Aftab Pureval unveiled a plan Thursday to legalize accessory dwelling units, sometimes referred to as “granny flats,” throughout the city wherever there currently is single-family zoning.
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Under the proposed ordinance, an ADU on a 4,000 square foot lot or larger cannot occupy more than 15% of the total lot area. For lots less than that, the combined coverage of the primary home and the ADU cannot exceed 60% of the total lot area.
Other provisions include:
-The ADU cannot exceed 25 feet in height
-There must be 10 feet between the primary dwelling and the ADU if it is not already attached to the house.
-A separate structure ADU cannot be in the front yard.
There is no mention of parking requirements in the article.