Loudoun County Weighs Data Center Application Freeze Despite Dillon’s Rule

Loudoun County’s Pause Proposal and the Legal Maze

Loudoun County, Virginia — home to Data Center Alley and more than 53 million square feet of digital infrastructure — is now formally considering a freeze on new data center applications. On a 6-1 vote, the Board of Supervisors directed staff to draft language for a pause and deliver a legal analysis by the Sept. 15 meeting. The move would have been unthinkable in the county a decade ago, but it arrives as public frustration over noise, power lines, and land use grows across the country.

The immediate obstacle is Virginia’s strict adherence to Dillon’s Rule, which holds that local governments can exercise only those powers explicitly granted by the state. The Virginia code does not authorize moratoriums, and Loudoun’s own FAQ states the board lacks that authority. Yet several other Virginia localities — Chesapeake, Front Royal and Fluvanna County — have recently enacted application holds while revising their zoning rules, carefully avoiding the word "moratorium." Loudoun supervisors are exploring whether a similar approach can survive legal scrutiny.

The proposal’s sponsor, Algonkian District Supervisor Juli Briskman, framed it as a time-out to let the county finish a two-phase impact study. The second phase, which will set new guidance on data centers and electrical substations, is not expected until spring 2027. Briskman told Bisnow that constituent complaints about quality of life, health, and rising living costs have intensified since she first campaigned in 2019.

The one dissenting vote, Supervisor Kristen Umstattd, argued the board lacks legal authority and risks lawsuits. She also highlighted the county’s dependence on data center revenue: the sector supplied 38% of general fund revenue in 2024, totalling $875 million. With a growing housing pipeline and associated school costs, she warned that halting the industry’s growth could blow a hole in the budget. The debate leaves Loudoun caught between its identity as the internet’s physical home and a grassroots backlash that is no longer fringe.

What a Data Center Halt Means for Virginia’s 'Data Center Alley'

The Legal Gamble: Pause Without Calling It a Moratorium

Virginia’s Dillon’s Rule severely constrains localities. Attorney Brian Winterhalter of DLA Piper noted that no state holds the doctrine in higher regard. The only legally safe path to restrict data centers is to amend the zoning ordinance — a two-step process that is difficult to reverse if political winds shift. Lawyers for Chesapeake and Fluvanna argue their application delays fall within a “reasonable” processing window, citing Virginia code that 12 months is reasonable for counties. Loudoun would likely adopt a similar rationale, but the county attorney has yet to opine, and the wordplay may invite a legal challenge from developers.

Gregory Riegle, a land-use partner at McGuireWoods, said even a temporary pause would signal that the industry “is no longer welcome to expand and continue to invest in Loudoun County.” With a pipeline of at least 40 million square feet of additional projects, developers have enormous sunk expectations. QTS alone has put nearly $2 billion into the county, and the Data Center Coalition warned that moratoriums would force investment and high-wage jobs to neighboring states.

Revenue Dependence vs. Community Pushback

Data centers have been the county’s fiscal engine for a generation. Under Buddy Rizer, the county’s economic development chief, Loudoun courted Amazon, Microsoft and others after the 2008 financial crisis, creating a tax base that today dwarfs residential contributions — especially because, as Supervisor Umstattd pointed out, housing does not cover its own school costs. That fiscal arithmetic explains why a pause is a high-stakes trade-off: pausing development now could protect community character but at the cost of future revenue to fund schools and services that a growing population demands.

The community opposition is not solely about noise. Residents also object to the transmission infrastructure that follows data center clusters. Briskman said the “commensurate energy infrastructure” is hurting perceived health and quality of life. That broader energy dimension is why the Phase 2 impact study is critical, and why advocates for a pause want it completed before more projects are approved. If the study recommends new standards, developers that moved forward in the interim could find themselves non-compliant, creating a different kind of legal and financial mess.

What Developers, Officials, and Residents Should Watch Next

For developers and investors:

• Track the Sept. 15 Board of Supervisors meeting, where staff will deliver a draft pause ordinance and a county attorney legal opinion. The language will reveal whether Loudoun attempts a Chesapeake-style “reasonable delay” or something more aggressive.
• Prepare for the possibility that even if a formal moratorium is struck down, the county could pursue zoning text amendments — as Frederick County is doing — which take longer but are legally sturdier. Engage early in that process.
• Watch whether other Virginia counties follow Loudoun’s lead. A successful application pause in the state’s flagship data center market could embolden local governments nationally, raising site-selection risk across portfolios.

For county officials and residents:

• The Phase 2 impact study due in spring 2027 will set new standards for data centers and substations. Any pause should be tied directly to completing that study, otherwise it risks being struck down as arbitrary delay.
• Weigh the risk of litigation. If a pause triggers a lawsuit and loses, the county may be liable for developers’ delay costs and could lose credibility for future land-use actions.
• If the legal path is blocked, the alternative is to lobby the General Assembly for explicit moratorium authority — a heavier lift that would force a statewide debate on data center growth.