# Renovation or alteration permit 100839545 at 1 N Dearborn St, Chicago

Chicago Department of Buildings permit 100839545, issued Nov 6, 2019 for 1 N Dearborn St: renovation or alteration. ***Self cert project*** interior renovation of existing tenant office suite on the 4th and 5th floor. Renovation includes demolition of the 5th floor slab in preparation for new 1-story communicating stair with integrated seating located at floors 4 and 5, interior partitions, ceilings, lighting and finishes, as well as the re-working of existing, electrical, sprinklers and fire alarm. Current use: office/ proposed use: office

- Permit number: 100839545
- Issued: Nov 6, 2019
- Type: Renovation or alteration
- Status: Complete
- Reported cost: $505,000
- Community area: Loop (32)
- All permits at this address: https://nearbypermits.com/chicago/address/1-n-dearborn-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-01 10:13 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/