Data center campus · 2300 Chelsea Blvd., Allen, Collin County, Texas
CyrusOne Allen campus (DFW3-DFW5)
Operating
as of April 2, 2025
A CyrusOne campus of more than 90 acres in Allen where two buildings provide 77 MW of IT capacity and a third parcel is held for later growth. Also known as: DFW3, DFW4, DFW5.
PowerNot statedNot reported in the records found
Floor area976,000sq ft
Site90acres
IT load77MW
Who is behind it
ProjectCyrusOne Allen campus (DFW3-DFW5)Also: DFW3, DFW4, DFW5
Developer and teamCyrusOne
End userNot found in the recordsNot yet named in any record or credited report we have found.
The record, newest first
CyrusOne's location page lists DFW3 and DFW4 at a combined 77 MW of IT capacity on a 90-plus-acre campus, with DFW5 held as land for future growth. (CyrusOne, Oct. 29, 2026)
A small office finish-out inside the Allen data center was registered for December 2024 to April 2025. (Texas Department of Licensing and Regulation (TABS), Oct. 29, 2026)
CyrusOne registered work to add a data hall inside an existing building at its Allen campus. (Texas Department of Licensing and Regulation (TABS), Oct. 29, 2026)
Conflicts and open questions
- sqft is technical space at full build-out per CyrusOne.
- The lead's 'Cisco Allen' building was not researched as a separate site.
The full record
- Evidence
- Primary public records
- Size class
- Under 50 MW (outside main scope; kept for completeness)