Quantum Park data centers (Ashburn)
A developer wants two new data center buildings and a substation on about 40 acres of the Quantum Park office campus at Loudoun County Parkway and Waxpool Road. The plan would remove a pond. Several supervisors called it too much and said they would vote against it.
Where things stand: Planning Commission recommended approval in February 2026. Several supervisors said in April they would vote no; a final vote was set for May 19, 2026.
🕒 Latest update (April 15, 2026): Supervisors moved the plan to a May 19 vote; several said they would vote no.
What we know
- 📍 WhereQuantum Park office campus, Loudoun County Parkway near Waxpool Road, Ashburn, Loudoun County, Loudoun County
- 🌳 Size40 acres
❓ Still unanswered
Nobody has answered these in public yet. Can you help find out?
- What did supervisors decide on May 19, 2026? 🙋 I'll find out
What happened so far
- Feb 12, 2026Planning Commission voted 7-1-1 to recommend approval.
- April 15, 2026Supervisors moved the plan to a May 19 vote; several said they would vote no.
Local votes and rules
📌 Other
Supervisors voted unanimously to ask staff for a legal analysis of ending the 2025 grandfathering rule, due at the October 6, 2026 board meeting. Until the board acts, the rule stays in effect.
⏸️ Pause on new data centers
Supervisors voted 7-1 to pause new data center applications for 12 months while the county rewrites its data center rules. The county attorney had warned that true moratoria are rarely allowed in Virginia.
🗺️ Zoning change
Supervisors voted 7-2 to end by-right data centers. New data centers now need a 'special exception', with public hearings before the planning commission and the board.
📌 Other
On the same night, supervisors voted 5-4 to 'grandfather' data center applications already in review, so they can still be approved by staff without a public hearing. In September 2026, 17 such applications (about 11 million square feet) were still in review.
✅ Approved
Supervisors voted 5-4 to rezone 83 acres south of Leesburg along the Dulles Greenway for JK Land Holdings' Greenlin Park: up to 1.4 million square feet of data centers with a 55-foot height limit, noise limits and a 300-megawatt power cap for five years.
An aerial photo of the area.
Where this comes from
- Planning Commission sends Quantum Park data center project to supervisors · Loudoun Times-Mirror · Feb 16, 2026
- "It's Absurd:" Loudoun Supervisors Criticize Quantum Park Data Center Expansion · Blue Ridge Leader · April 29, 2026
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