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Microsoft Corporation – Leesburg Data Center (IAD01-02-03-04-05)

Operating on Virginia DEQ's records · 19935 Sycolin Road, Leesburg 20175 · Loudoun County · ZIP 20175

See it on the map

Air permits

• 74220-4, issued Mar 7, 2025 (Article 6 - mNSR)

Schools within 2 miles

• Loudoun Co. Juvenile Detention Home (Leesburg), 0.69 mi
• Heritage High (Leesburg), 1.53 mi
• Cool Spring Elementary (Leesburg), 1.63 mi
• Academies of Loudoun (Leesburg), 1.64 mi
• The Loudoun Governor's Career & Technical Academy (Leesburg), 1.64 mi
• J. Lupton Simpson Middle (Leesburg), 1.92 mi

Other data centers within 1 mile

• Amazon Data Services Inc IAD-667, IAD-668, IAD-669, IAD-670, and IAD-6710.64 mi
  Operating 20575 Celtic Park Drive, Leesburg · Loudoun County · air permit Mar 12, 2025

County filings within 2 miles

11 filings (land-use applications and site plans) that mention a data center, from Loudoun County records; 5 still in county review. Filings come before any DEQ air permit, so some of these may not be on DEQ's records yet.

• Cross Mill Center0.24 mi
  Site plan in review Site plan EPLAN-2026-0140, filed Sep 17, 2026 · Loudoun County · on the map
  CROSS MILL CENTER - This plan proposes the development of two data center buildings with associated infrastructure and construction of proffered road improvmeents along Sycolin Road
• Greenlin Park0.67 mi
  Site plan in review Site plan EPLAN-2025-0126, filed Aug 8, 2025 · Loudoun County · on the map
  GREENLIN PARK: The properties are currently zoned PD-IP, located in the ariport impact OD, and is under the 1993 Revised Loudoun County Zoning Ordinance. The properties will be developed into four 1-story data centers…
• IAD050.68 mi
  Site plan approved Site plan STMP-2023-0004, filed Mar 8, 2023 · Loudoun County · on the map
  IAD05 : REQUEST APPROVAL OF A MODIFIED PROCESS SITE PLAN (STMP) FOR CONSTRUCTION OF ONE (1) DATA CENTER IN THE, PLANNED DEVELOPMENT INDUSTRIAL PARK (PDIP) ZONING DISTRICT.
• IAD040.68 mi
  Site plan approved Site plan STMP-2022-0002, filed Mar 16, 2022 · Loudoun County · on the map
  IAD04 : REQUEST APPROVAL OF A MODIFIED PROCESS SITE PLAN (STMP) FOR CONSTRUCTION OF 1 DATA CENTER BUILDING AND ASSOCIATED UTILITIES, IN THE (PDIP) PLANNED DEVELOPMENT- INDUSTRIAL PARK ZONING DISTRICT.
• Site Plan Amendment for EPLAN-2023-01281.27 mi
  Site plan approved Site plan EPLAN-2024-0139, filed Sep 20, 2024 · Loudoun County · on the map
  PROJECT ASPEN SPAM: This is a revision to EPLAN-2023-0128 to adjust the Mechanical Yard (MYD) per new specifications provided by the Owner. The revision does not change the Data Center, Electrical Yard or any of the…
• Project Aspen1.27 mi
  Site plan approved Site plan EPLAN-2023-0128, filed Dec 7, 2023 · Loudoun County · on the map
  PROJECT ASPEN: FAST TRACK Site Plan is for the Phase 3 extension of the existing Data Center complex with associated support facilities.
• Twin Creeks Buildings 4 & 51.43 mi
  Site plan in review Site plan EPLAN-2026-0078, filed Jun 3, 2026 · Loudoun County · on the map
  TWIN CREEKS DATA CENTERS: Site containing two data center buildings with associated infrastructure and landscaping. (REVISION OF APPROVED PLAN STPL-2022-0040)
• Samuels Mill Assemblage1.47 mi
  Site plan in review Site plan EPLAN-2024-0211, filed Dec 30, 2024 · Loudoun County · on the map
  SAMUELS MILL ASSEMBLAGE: 2-story data center and associated infrastructure.
• TUSCARORA CROSSING LANDBAY 71.72 mi
  Site plan approved Site plan EPLAN-2024-0059, filed May 8, 2024 · Loudoun County · on the map
  TUSCARORA CROSSING LB 7: REQUEST APPROVAL OF A MODIFIED PROCESS SITE PLAN (STMP) FOR TWO DATA CENTER BUILDINGS in LB 7A and 7B - ZONED PD-IP
• COCHRAN MILL ROAD1.77 mi
  Site plan approved Site plan STPL-2022-0040, filed Sep 27, 2022 · Loudoun County · on the map
  (APPROVED) COCHRAN MILL ROAD : REQUEST APPROVAL OF A SITE PLAN (STPL) FOR THE REDEVELOPMENT OF MULTIPLE MATERIAL MANUFACTURING PLANTS AND NEW DEVELOPMENT CONSISTING OF THREE (3) DATA CENTERS, TWO (2) WAREHOUSES AND…
• Twin Creeks Buildings 1-31.89 mi
  Site plan in review Site plan EPLAN-2026-0111, filed Jul 29, 2026 · Loudoun County · on the map
  Project proposing Data Center buildings 1-3 of the Twin Creeks site with associated landscaping and infrastructure.

Source

DEQ Air Sites record 74220 (permit class: 80% Synthetic Minor). The stage is DEQ's own. This page is rebuilt every morning from DEQ's records.