Alteration or repair at 400 S La Salle St
Chicago Department of Buildings permit 101084518, issued Sep 16, 2026 for 400 S La Salle St: alteration or repair. Phase 3 of 3: interior alterations to existing 7-story office building to convert to a data center. Work to include new equipment with associated MEP upgrades. Phase 1 demolition only work permitted under 101083036. Phase 2 infrastructure work permitted under 101081181. IA Construction; b-business
- Permit number
- 101084518
- Issued
- Type of work
- Alteration or repair
- Status
- Issued
- Reported cost
- $151,112,046
- ZIP code
- 60605 (from the permit's location)
- City's category
- Permit - renovation/alteration
- City's status
- Active
- Source
- Chicago Department of Buildings permit data (this record)
Type of work and status are our standard labels, so permits compare across cities. The city's own wording is shown above. Costs under $100 are shown as not listed, because filers often enter $0 or $1 when no cost is required.
All permits at 400 S La Salle St
Chicago Department of Buildings last updated its data Oct 1, 2026. We checked it 2026-10-01 16:30 UTC. Official data.