# Alteration or repair permit 101069901 at 140 S Dearborn St, Chicago

Chicago Department of Buildings permit 101069901: issued Jul 23, 2025 for alteration or repair work at 140 S Dearborn St. Electrical only. Electrical upgrades to existing 4000a panel for preventive maintenance in the basement of a 17-story landmark building. Work to include the removal, refurbishment and reinstallation of two 2000a switches, and two 2000a panels, with 4 feeds for the existing boilers - (2) 1000a and (2) 1200a boiler feeds. No mechanical work, architecture, structural, or plumbing work. (Occupancy type: B, construction type: 1a).

- Permit number: 101069901
- Issued: Jul 23, 2025
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Issued (city: Active)
- Reported cost: $239,344
- ZIP code: 60603 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/140-s-dearborn-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-12 02:22 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 140 S Dearborn St: https://nearbypermits.com/chicago/address/140-s-dearborn-st/