# Alteration or repair permit 100581412 at 641 W Lake St, Chicago

Chicago Department of Buildings permit 100581412: issued Mar 16, 2015 for alteration or repair work at 641 W Lake St. Self-cert: interior alterations to office space on lower level, 1st floor, and 2nd floor as per plans. 33,101 SF. Single tenant occupied.

- Permit number: 100581412
- Issued: Mar 16, 2015
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Finished (city: Complete)
- Reported cost: $1,300,000
- ZIP code: 60661 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/641-w-lake-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-15 15:43 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 641 W Lake St: https://nearbypermits.com/chicago/address/641-w-lake-st/