The St. Louis Armory Data Center Lawsuit: Residents and Advocates Take a $3 Billion Permit to Court

Most data center litigation on this tracker involves farmland, rural counties, and rezonings of hundreds or thousands of acres. The St. Louis case is different: a proposed hyperscale facility inside a major city's urban core, on a site near the historic Armory in Midtown, approved not by rezoning but by a conditional use permit issued under existing zoning. Developer David Lambiaso filed to redevelop the site into a data center reported at $3 billion.

Residents appealed the permit to the city's Board of Adjustment, the body that hears challenges to zoning decisions. The board's hearing drew roughly 11 hours of public comment, an extraordinary volume for a single item, and ended with the board rejecting the appeals and granting the conditional use permit. That decision is what the August 28 lawsuit attacks.

The complaint's core argument is legal rather than environmental: that the board erred in denying the appeals and granting the permit, and in doing so acted arbitrarily, capriciously, and contrary to law. The plaintiffs also contend that a data center is not a recognized conditional use in the zoning district, meaning the board approved something the code did not give it the power to approve. Around that legal core, the suit cites the concerns residents raised at the hearing: air and water pollution, construction noise, and the facility's electricity demand. The relief requested is a stay of the board's action while the case proceeds and reversal of the decision.

The plaintiff group pairs neighbors with organizations. Daniel Pate and Kerry McCullen are residents who fought the permit at the board; Pate told reporters the city was bending and twisting itself into pretzels to approve the project. The Missouri Workers' Center and the Missouri Coalition for the Environment bring institutional weight and the ability to sustain litigation, a pattern that also appears in the Stokes County, North Carolina case, where environmental and civil rights organizations joined residents as plaintiffs.

The city, through a spokeswoman for Mayor Cara Spencer, declined to comment on pending litigation.

Missouri has become one of the busier data center battlegrounds of 2026. The Festus Sunshine Law suit over a $6 billion project was filed in April. Peculiar removed data centers from its zoning code entirely. And in the weeks before the St. Louis filing, both Jackson County and St. Charles County, directly across the Missouri River from the city, adopted six month moratoriums, according to the national tracker we summarize in our moratorium tracker. The St. Louis case asks whether the city itself, which has no moratorium, followed its own code when it let a hyperscale campus into Midtown.

The case also previews a question that will recur as operators run out of rural land near power: whether existing urban industrial and commercial zoning was ever written to accommodate a facility that draws the electricity of a small city. When the code is silent, the fight is over whether silence means yes.

If a data center near you is being approved under a permit rather than a rezoning, St. Louis is the case to watch, and its lessons apply now:

• Read the district's use list. If data center, or the category the city is using to cover it, does not appear as a permitted or conditional use, that is the strongest argument available.
• Exhaust the appeal. The St. Louis residents went to the Board of Adjustment first. Courts generally require that administrative step before they will review a permit.
• Build the record at the hearing. Eleven hours of public comment created a record the court can now examine for whether the board addressed it.
• Watch the clock. Petitions for review of a board decision run on short deadlines, often 30 days. Our deadlines guide explains why.

Our guide to fighting a proposed data center covers the process from first notice to filing. If you are facing a permit like this one, our free case review connects you with an independent attorney in our network who handles data center cases in your state, at no cost and with no obligation.