Cincinnati extends data center restrictions while it rewrites the rules
Cincinnati OH – City Council extended temporary data center controls on April 1, keeping extra review in place while officials draft permanent zoning rules.
Cincinnati will keep temporary controls on new and expanded data centers in place while it decides how those projects should be handled under permanent zoning rules.
City Council voted April 1, 2026 to extend Interim Development Control Overlay 89 rather than let the earlier three-month controls expire. The practical effect is that data center proposals in covered parts of the city do not move ahead as a routine use while the zoning study continues.
That matters because Cincinnati says its zoning code still has no dedicated definition for a data center. For now, those projects have been treated as indoor storage uses, a mismatch city planners say could allow major facilities to move through the code before the city finishes deciding where they fit and what standards should apply.
Where the overlay applies
The overlay does not cover all land in Cincinnati. It applies to properties in the CC-A, CG-A, UM, DD, ML, and MG zoning districts. The city says that adds up to more than 22,000 parcels across downtown-oriented, commercial, and manufacturing areas.
Those are the districts where indoor storage is currently allowed, which is why they became the focus of the interim overlay. The city planning page describes the measure as a temporary way to regulate new or expanded data centers while staff studies possible zoning code changes.
What developers now have to do
Under the interim rules, certain applications tied to data centers must go through City Planning Commission review. That includes building permits, certificates of compliance, and certificates of appropriateness for new construction, expansions, changes in use, and related site work.
The ordinance packet says applicants first submit materials to the Department of City Planning and Engagement. The commission then reviews whether a proposal meets the public-interest standard and other review factors set out in the overlay.
Those factors include neighborhood compatibility, conformity with the underlying zoning district, power and utility coordination, water use and availability, stormwater management, and other possible adverse effects such as traffic, public-service access, air quality, noise, and impacts on nearby property. The review also asks whether a project is likely to provide economic or other public benefits to the city.
In other words, this is not a blanket ban on data centers. It is an added review layer while Cincinnati writes permanent rules.
Why residents and businesses should pay attention
For residents, the main stakes are land use and infrastructure. The city is explicitly studying how data centers could fit with nearby neighborhoods, electric capacity, water demand, stormwater runoff, and broader development patterns before it creates a permanent zoning category.
For business owners and property owners in covered districts, the change means a proposal that might once have been treated as a straightforward indoor-storage use now faces a more visible city review process.
WCPO reported that city officials expect proposals could come forward before permanent rules are finished. That helps explain why council chose to extend the overlay instead of letting the temporary controls lapse.
What comes next
The permanent answer is still unresolved. City planning materials say the study is expected to produce a formal data center definition and recommendations for zoning code amendments later in 2026.
Residents who want to track the issue should watch for future City Planning Commission discussions, any zoning-study recommendations, and a later council vote on permanent code changes. Until then, Cincinnati is using the overlay to make sure data center projects in the covered districts get a closer look before they move ahead.