Iron Mountain's Westview Data Center Bypasses Miami-Dade Rezoning

Iron Mountain is building a 150,000-square-foot, 16-megawatt data center on 3.4 acres in Westview, an unincorporated, majority-Black Miami-Dade community, without ever going before the county commission for a rezoning vote. The New Hampshire-based company classified the $150 million project as a “telecommunications hub,” a use permitted by right in Miami-Dade’s IU-1 and IU-2 industrial districts. That single label, defined in the county’s own zoning code, is what let MIA-1 break ground in February 2025 with no public hearing required.

Why it matters

Miami-Dade’s zoning code treats a telecommunications hub as permitted by right in industrial zones as long as at least 85 percent of the building’s floor area holds equipment or machinery, capping staff space at 15 percent. That threshold, not any data-center-specific ordinance, is the mechanism developers are using across the county to avoid rezoning scrutiny. Iron Mountain still needed a variance to raise the building’s height from 70 to 75 feet and cut required parking from 91 spaces to 26, but county rules only require mailed notice to properties within 500 feet for that kind of request, far short of the reach a full rezoning hearing would trigger. Miami-Dade Commissioner Marleine Bastien represents the district. Metrobloks is running the same by-right path a few miles away at 400 NW 137th Avenue, a planned 112,900-square-foot, 22-megawatt facility near the Everglades targeting a fourth-quarter 2026 launch, according to Baxtel data center listings.

The numbers

MIA-1 is projected to create 30 jobs at an average salary above $71,000, per the Miami-Dade Beacon Council’s groundbreaking announcement. Miami-Dade already hosts 27 of Florida’s roughly 110 data centers, according to WLRN’s reporting. Iron Mountain says the facility will run on 100 percent carbon-free power.

What’s next

Florida’s SB 484, which took effect July 1, bars utilities from shifting data center infrastructure costs onto residential ratepayers, but only for facilities of 50 megawatts or more, a threshold MIA-1’s 16 megawatts falls well under. Residents near Westview, including HOA president Vanessa Woodward Byers, are pressing Miami-Dade to widen notification requirements beyond 500 feet for future telecommunications-hub variance requests. Track the fight over how much power capacity the county allows by right before a project must face a commission vote on our South Florida market hub.