Nashville data center zoning proposals, moratorium headed to July 7 public hearing

Metro Council is scheduled to hold a public hearing on July 7, 2026 on two bills that would reshape how Nashville defines and permits data centers—and temporarily pause certain permit steps while the broader rule package moves through the public process.

BL2026-1391 would update Nashville’s zoning code with more specific data-center categories and operating standards. BL2026-1448 would create a temporary moratorium on specified zoning, building, and grading permit actions for data-center developments while the zoning bills are finalized.

Two Metro Council bills are moving together

BL2026-1391 proposes new zoning definitions and conditions for data centers, including categories such as data center – small, data center – medium, data center – large, and data center – campus. The bill also lays out location and operation standards meant to reduce impacts on nearby sensitive uses.

BL2026-1448 would declare a temporary moratorium on the acceptance, processing, approval, and issuance of zoning, building, or grading permits for “data center developments” within Nashville & Davidson County, administered through the Metropolitan Department of Codes Administration and the Metropolitan Water Services Department.

What the proposed zoning standards would change

A major part of BL2026-1391 is a set of distance buffers aimed at reducing conflicts with nearby homes and other sensitive land uses.

• “Data center – small”: no permitting on parcels within 100 linear feet of parcels containing residential use, daycare home or daycare center, religious institutions, community education uses, parks, zoos, or other data centers.
• “Data center – medium”: no permitting on parcels within 500 linear feet of parcels containing those same categories (including parks and zoos).

The bill also includes operational requirements residents are likely to watch closely, including:

• Noise limits: maximum sound levels of 65 decibels during daytime hours and 55 decibels during nighttime hours, measured from property lines.
• Light-trespass restrictions: a requirement that there be no light trespass from the site onto surrounding properties, including any right-of-way.
• Cooling expectations: cooling and ventilation equipment would need to operate on a closed-loop system (as defined in the legislation).
• Backup generator rules: emissions-producing electrical generation would be limited to backup and emergency use only, and generator operation would be limited to no more than 72 hours consecutively, with stated exceptions for renewable energy uses and generator testing/commissioning.

What data-center applicants would have to prove in zoning permits

BL2026-1391 also adds new application requirements for zoning permits for data centers (including a new Section 17.40.575).

Among the key requirements:

• Electric capacity confirmation: at the time of application, the developer must provide written confirmation that Nashville Electric Service (NES) reviewed the project and agreed to provide electric service—and the bill states no zoning permit would be approved without that agreement.
• Water and sewer capacity confirmation: at the time of application, the developer must provide written confirmation from the applicable utility that there is adequate water and/or sewer capacity—and the bill states no zoning permit would be approved if capacity is insufficient.
• Noise impact assessment: a required noise study assessed at a 500-foot distance from the property line, tied to the proposal’s daytime/nighttime decibel limits.
• Lighting plan tied to light trespass: a lighting plan intended to show there will be no light trespass onto surrounding properties and right-of-way.
• Transmission line impact assessment: an assessment addressing whether new or upgraded transmission lines are needed and related impacts, including screening and (where applicable) tree removal on public land and rights-of-way.

The temporary moratorium: what it would pause (and when it would end)

Under BL2026-1448, the moratorium is tied to permit actions handled by the Metropolitan Department of Codes Administration and the Metropolitan Water Services Department. The bill would pause the acceptance, processing, approval, and issuance of zoning, building, or grading permits for “data center developments” within Nashville & Davidson County.

Timing details matter here: the ordinance would run until November 1, 2026 or until the effective date of BL2026-1391 and BL2026-1392—whichever occurs first.

And the legislation also lays out an effective-date condition: it would take effect upon publication of a notice announcing the change in a newspaper of general circulation, published within five days following final passage.

Key dates residents and property owners should track

• June 25, 2026: Nashville’s Metro Planning Commission agenda packet shows staff recommended holding the public hearing and deferring to the June 25, 2026 Planning Commission meeting for the data-center item (BL2026-1391).
• July 7, 2026: Metro Council has both bills on the schedule for public hearing, including BL2026-1391 and BL2026-1448.

Why this is getting public attention

Buffer distances, noise, and nighttime light impacts are likely to remain central issues for nearby residents and sensitive-site stakeholders. CBS News reported residents raised concerns about noise and bright lights in the context of a proposed data center near the Nashville Zoo, including testimony tying constant noise and light penetration to animals’ day/night rhythms.

For anyone living near proposed or potential data-center expansion areas, the practical next step is to focus on what these bills would change on paper: distance thresholds (where projects can’t be sited), and the permit-approval triggers (what utilities and studies applicants must provide before key zoning steps move forward).

Sources

• Legistar: BL2026-1391 (data center zoning standards + permit requirements)
• Metro Planning Commission draft agenda (June 11, 2026) — June 25 deferral

Related News

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