# Alteration or repair permit B200455897 at 900 W Lake St, Chicago

Chicago Department of Buildings permit B200455897: issued May 13, 2026 for alteration or repair work at 900 W Lake St. In-kind replacement of exterior windows and doors in existing openings. Replacement windows: 20; replacement skylights: 0; replacement doors: 2. Affects: 0 residential unit(s), 1 non-residential unit(s), location: 1st floor windows and doors.

- Permit number: B200455897
- Issued: May 13, 2026
- Type of work: Alteration or repair (city: Exterior Windows/Doors Replacement, PERMIT – EXPRESS PERMIT PROGRAM)
- Status: Issued (city: Active)
- Reported cost: $200,000
- ZIP code: 60607 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/900-w-lake-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-05 21:34 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 900 W Lake St: https://nearbypermits.com/chicago/address/900-w-lake-st/