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Certified facility dossier

Microsoft San Antonio (SAT14)

Microsoft's Wiseman Boulevard campus was filed in several construction phases under one certified name. The first phase covered two building shells, and later filings covered separate interior areas.

16Sourced facts7Source records4Open gaps

What the record establishes

Owner, occupant and operator of record
Microsoft Corporation[1]as of August 18th, 2021
Address
3545 Wiseman Boulevard, San Antonio, Bexar County[3]
First phase filed construction cost
$154.9 million[3]
First phase filed building area
259,000 sq ft[3]
Building shells in the first phase
2 buildings[3]
Second phase filed construction cost
$26.8 million[4]
Second phase filed area
46,000 sq ft[4]
Third phase filed construction cost
$31.3 million[5]
Third phase filed area
60,000 sq ft[5]
Fourth phase filed construction cost
$27.2 million[6]
Fourth phase filed area
46,000 sq ft[6]
Administrative backup generators in the air review
2 units[7]
Smaller backup generators in the air review
20 units[7]
Nameplate rating for each smaller backup generator
3.1 MW[7]
Larger backup generators in the air review
6 units[7]
Nameplate rating for each larger backup generator
3.9 MW[7]

What changes the reading

  • The phase filings cover different scopes at the same address. Adding their areas would count shells and interior work as though they were separate buildings, so this page leaves each phase intact.[3][4][5][6]
  • The air review's generator ratings describe backup equipment. They are not the campus's normal information technology load.[7]
  • A completed construction filing records accessibility review. It does not establish that the campus is carrying computing traffic.[3]

Still not public

  • Current information technology load is not public.
  • Building by building operating status is not public.
  • Water use and cooling design are not public.
  • The public records do not map every construction phase to a specific hall.

Source trail

  1. Data Center ListsTexas Comptroller of Public AccountsfilingRead August 27th, 2026.
  2. Wiseman Boulevard datacenter construction updateMicrosoft LocalcompanyRead August 27th, 2026.
  3. Microsoft SAT14 Phase 1Texas Department of Licensing and RegulationfilingRead August 27th, 2026.
  4. Microsoft SAT14 Phase 2Texas Department of Licensing and RegulationfilingRead August 27th, 2026.
  5. Microsoft SAT14 Phase 3Texas Department of Licensing and RegulationfilingRead August 27th, 2026.
  6. Microsoft SAT14 Phase 4Texas Department of Licensing and RegulationfilingRead August 27th, 2026.
  7. Technical Review for Microsoft SAT14Texas Commission on Environmental QualitypermitRead 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.