# Alteration or repair permit 100905394 at 123 N Wacker Dr, Chicago

Chicago Department of Buildings permit 100905394, issued Apr 28, 2021 for 123 N Wacker Dr: alteration or repair. Spr 2019 CBRC: installation of a new emergency back-up generator at the 1st floor and a new smoke evacuation system service on the 28th, 29th, and 30th floor atrium in an existing office building, as per plans. (Occupancy group b/s-2; type IA construction) **certified plans corrections: conditional permit subject to field inspections **

- Permit number: 100905394
- Issued: Apr 28, 2021
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Finished (city: Complete)
- Reported cost: $1,100,000
- ZIP code: 60606 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/123-n-wacker-dr/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-01 14:54 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/