Microsoft: Wellington MNZ07 Campus

Microsoft's Wellington campus sits on the southeast corner of I-66 and the University Boulevard overpass near Gainesville, in Prince William County's Brentsville district. It lies inside the county's Data Center Opportunity Zone Overlay District.

Land. Microsoft bought three parcels totaling about 124 acres in February 2024 for $465.5 million. The seller was 41992 John Marshall Highway LLC, an entity tied to landowner Chuck Kuhn. The land is zoned M-1 heavy industrial, which allows data centers by right. A 2023 rezoning request by the prior owner ("University Business Park") sought up to 3.8 million square feet and taller buildings. The county lists that case as inactive.

History. The site was part of the Atlantic Research Corporation rocket and missile plant, decommissioned in 2005. Groundwater cleanup continues under a U.S. EPA consent order. The prior operator remains responsible for the treatment and monitoring systems.

Plan. Microsoft's 2026 Army Corps permit application covers two one-story data center buildings, an on-site electrical substation, water storage, detention ponds, sewer and industrial wastewater systems, and fiber and electrical conduit. Microsoft says construction is still a long way off.

Power. The site is in NOVEC's service territory, fed from Dominion's 230 kV network.

Neighbors. Amazon's Wellington campus borders the site to the south. A Google-linked campus (Sharpless Enterprises) lies to the east. CorScale's Gainesville Crossing sits across I-66.