13 data center projects in Unincorporated Prince William County
Who decides here: the Prince William County Board of Supervisors decides on zoning for land outside city and town limits.
In Unincorporated Prince William County
Prince William Digital Gateway (Pageland Lane)
Prince William County, Prince William County
2,100 acres
π April 30, 2026: QTS appealed to the Virginia Supreme Court.
Stopped or cancelledDulles South Innovation Center (Sanders Lane)
Prince William County, Prince William County
2,000 acres
π July 7, 2026: Board of County Supervisors voted 8-0 to deny the comprehensive plan change.
Approved, not built yetDevlin Technology Park (Bristow)
Prince William County, Prince William County
270 acres Β· for Amazon Web Services
π Nov 2025: Amazon Data Services bought most of the site for about $700 million.
Approved, not built yetData center on Prince William Parkway near Hornbaker Road
Prince William County, Prince William County
40 acres
π March 3, 2026: Board of County Supervisors approved the project 4-3.
ProposedProject Industry data center (Wellington Road, Brentsville District)
Prince William County, Prince William County
42 acres
π Sept 1, 2026: Board of County Supervisors deferred its vote.
ProposedYondr and Cerberus 72 MW campus (Manassas area)
Prince William County, Prince William County
40 acres
π Aug 3, 2026: Yondr and Cerberus announced they bought the 40-acre site.
Reported in the news, not confirmed yet
Approved, not built yetLHR Gainesville data center campus (Linton Hall Road, Bristow)
Prince William County, Prince William County
196 acres
π Oct 2025: Army Corps of Engineers took public comments on a wetlands permit.
Reported in the news, not confirmed yet
Being builtNTT Grove at Gainesville campus (I-66 and U.S. 29)
Prince William County, Prince William County
π July 2024: First building was rising along I-66.
Reported in the news, not confirmed yet
Stopped or cancelledSTACK Bristow Campus (Linton Hall and Nokesville roads)
Prince William County, Prince William County
58 acres
π Sept 9, 2025: Board of County Supervisors denied the Bristow Campus 4-2.
Being builtMicrosoft data center on Hansen Farm Road
Prince William County, Prince William County
for Microsoft
π May 2024: Construction began.
Reported in the news, not confirmed yet
Being builtMicrosoft data center on Jacksonville Avenue
Prince William County, Prince William County
for Microsoft
π Jan 2024: Site preparation began.
Reported in the news, not confirmed yet
Stopped or cancelledQuantico Ridge data center plan (Dumfries Road, near Prince William Forest Park)
Prince William County, Prince William County
160 acres
π May 2026: Comprehensive plan amendment request withdrawn.
Reported in the news, not confirmed yet
ProposedGardner Property data centers (former Hillwood campground, Gainesville)
Prince William County, Prince William County
π Aug 13, 2026: Developer held a community meeting.
Nearby (within 15 miles)
Starwood Word of Grace data center (Renaissance Tech Park, Herndon area)
Fairfax County, Fairfax County
8 acres
π Dec 2025: Starwood filed site plans and an initial air permit.
Reported in the news, not confirmed yet
Proposedabout 14 miles awayServerfarm data center at 7980-7990 Quantum Drive (Tysons)
Fairfax County, Fairfax County
π March 11, 2026: Serverfarm's attorney filed a statement supporting its special exception request.
Reported in the news, not confirmed yet
Proposedabout 15 miles awayStarwood data center on county police training land (3721 Stonecroft Blvd, Chantilly)
Fairfax County, Fairfax County
41.7 acres
π March 17, 2026: Board of Supervisors voted 9-0 to approve the land sale.
Proposedabout 15 miles awayPlaza 500 data center (Edsall Road, Bren Mar)
Fairfax County, Fairfax County
34 acres
π Feb 16, 2026: Local homeowner association leaders asked the county to swap the site for affordable houβ¦
Reported in the news, not confirmed yet
Local votes and rules
πΊοΈ Zoning change
Supervisors unanimously shrank the Data Center Opportunity Zone Overlay District from about 9,700 to 3,500 acres. Most new data centers will now need a special use permit with a public hearing. Projects already filed get a 90-day grace period.
β Turned down
Supervisors voted 8-0 to reject a land-use plan change for the Dulles South Innovation Center, a proposed campus of about 43 million square feet of data centers on 1,940 acres of homes and farms near Sanders Lane (Gainesville District).
βοΈ Court case
Neighbors sued over the county's December 2023 rezoning for the 2,100-acre Prince William Digital Gateway. A judge voided it because the newspaper notices were not spaced far enough apart, and the Court of Appeals agreed on March 31, 2026. The county stopped defending it in April, and QTS dropped its last appeal on July 2, 2026, ending the project.
π Data center rules
Supervisors voted 5-2 to update the noise law so data center cooling systems must meet noise limits around the clock: 73 decibels by day and 68 at night, measured on the 'C' scale that captures low hum. Residents and the county's advisory group had asked for a stricter method.
What you can do
- Get told first.
We'll email you if anything changes in Unincorporated Prince William County. - Go to county meetings.
Anyone can speak. Big projects usually need a public hearing. - Ask questions in writing.
Use our checklist.
π Get told first
β‘ Your electric company
Depending on where you live in Unincorporated Prince William County: Virginia Electric & Power Co. (company) or Northern Virginia Electric Co-op (co-op (owned by its members)).
Big data centers need a lot of power. Who pays for new power lines depends on state rules. See the rules in Virginia.
π Open tasks here
- Will the Virginia Supreme Court agree to hear QTS's appeal?
- When will construction start, and how many buildings will Amazon build?
- Who is the developer and who will use the data center?
- When will supervisors vote?
- How big would the data center be?
- Exactly where is the site, and is it inside the City of Manassas or the county?
- Does it need a rezoning or public hearing?
- Did the Army Corps of Engineers grant the wetlands permit?
- Has construction started?
- How many of the four buildings are finished?
- Is the building finished and running?
- Is the building finished and running?
- Will the developer try again?
- When will the Planning Commission and supervisors vote?
- Who will use the data centers?