# Alteration or repair permit 101084518 at 400 S La Salle St, Chicago

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: Sep 16, 2026
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Issued (city: Active)
- Reported cost: $151,112,046
- ZIP code: 60605 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/400-s-la-salle-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-01 22:42 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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