Texas AI Docket

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Certified facility dossier

San Antonio Data Center II

A CyrusOne building leased to Microsoft at the company's Westover Hills campus. CyrusOne publishes the site as one campus, so its power and technical space totals describe the campus around this certification rather than this building alone.

6Sourced facts4Source records4Open gaps

What the record establishes

Owner and operator of record
CyrusOne LLC[1]as of May 4th, 2016
Occupant of record
Microsoft Corporation[1]registry read August 27th, 2026
Certified building address in the compliance matrix
9500 Westover Hills Boulevard, San Antonio, Bexar County[3]
Current campus technical space
295,785 sq ft[2]as of August 27th, 2026
Current campus information technology capacity
36 MW[2]as of August 27th, 2026
Broader Westover Hills shell and fitout filed cost
$35 million[4]

What changes the reading

  • The campus totals combine the buildings CyrusOne now markets together. The company does not assign either total to this certified Microsoft building.[2][3]
  • The construction filing describes a broader Westover Hills shell and fitout. Its title does not identify this certification, so the cost is included as campus context rather than as a building cost.[4]
  • CyrusOne says its current campus uses water-free cooling. The company publishes that design for the campus and does not give a building-specific water figure.[2]

Still not public

  • Microsoft's contracted or active load in this building is not public.
  • Building area is not separated from the campus total.
  • The date Microsoft began using the building is not public.
  • Building-specific water use is not public.

Source trail

  1. Data Center ListsTexas Comptroller of Public AccountsfilingRead August 27th, 2026.
  2. San Antonio Data Center CampusCyrusOnecompanyRead August 27th, 2026.
  3. CyrusOne Compliance MatrixCyrusOnecompanyRead August 27th, 2026.
  4. Westover Hills Data CenterTexas Department of Licensing and RegulationfilingRead August 27th, 2026.

The registry entry for this facility comes from the Texas Comptroller's certified list of data centers holding a sales tax exemption. Owner, occupant and operator are roles in that filing rather than descriptions of who runs the building.