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Proposed

Prologis Concorde Industrial Park data center conversion (Sterling)

Prologis wants to tear down warehouse buildings on 17 acres off Old Ox Road in Sterling and build nearly 600,000 square feet of data centers plus a 5-acre substation. The Planning Commission recommended approval. Some supervisors said the county needs the warehouse space more.

βœ” ConfirmedSourceLast checked: Oct 7, 2026

Where things stand: Board of Supervisors reviewed it in February 2026; no final vote found.

πŸ•’ Latest update (Feb 11, 2026): Board of Supervisors held its review of the rezoning.

What we know

  • πŸ“ WhereJust off Old Ox Road, Sterling (Rt. 28 corridor), Loudoun County, Loudoun County
  • 🏒 CompanyPrologis
  • 🌳 Size17 acres

❓ Still unanswered

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What happened so far

  • Feb 11, 2026
    Board of Supervisors held its review of the rezoning.

Local votes and rules

πŸ“Œ 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.

Sept 2, 2026

⏸️ 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.

Sept 2026

πŸ—ΊοΈ 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.

March 18, 2025

πŸ“Œ 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.

March 18, 2025

βœ… 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.

Feb 19, 2025
πŸ›°οΈ See it from above

An aerial photo of the area.

We only know the town, so this shows the town center, not the exact site. Photos: USGS The National Map.

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Where this comes from

  1. Supervisors Consider Proposal to Convert Flex Warehouse Site to Data Center Space Β· Loudoun Now Β· Feb 17, 2026

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