# Alteration or repair permit 101061728 at 151 E Wacker Dr, Chicago

Chicago Department of Buildings permit 101061728: issued Jan 22, 2025 for alteration or repair work at 151 E Wacker Dr. The scope of work includes the removal of one (1) generator and three (3) automatic transfer switches and the mechanical systems for the supply and exhaust systems. Existing fuel systems and accessories will be reused to the fullest extent possible. The generator is located on the lower level (exhibit level) of the east tower, while the automatic transfer switches are located on the exhibit level electrical rooms as well as the penthouse rooms. A new electrical closet on the east tower exhibit level will be constructed to house ats-4 in order to maintain 2-hour separation from the main switchboard. Fan removal and ductwork modifications will be required in the east tower generator room and the adjacent storage room. New intake and exhaust louvers will be required. A new access door will be required to accommodate new ductwork. The west tower generator will be replaced prior to the east tower generator (under a separate permit) all downtime and cutovers shall occur after hours at a tim.

- Permit number: 101061728
- Issued: Jan 22, 2025
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Other (city: Suspended)
- Reported cost: $794,115
- ZIP code: 60601 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/151-e-wacker-dr/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-04 04:05 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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