# Alteration or repair permit 101021818 at 641 W Lake St, Chicago

Chicago Department of Buildings permit 101021818: issued Jul 17, 2023 for alteration or repair work at 641 W Lake St. Self-certification - 2019 CBRC project: interior alterationgroup B - office use (no change of use) the alteration of an existing 3,183 sq.ft., 1 story, single tenant space 1. Installation of a new partition wall with door and interior window to create a private office off an existing open office area. 2. Installation of a new interior window in an existing office partition wall. 3. Related electrical work including revised switching for the existing light fixtures located in the new office area.

- Permit number: 101021818
- Issued: Jul 17, 2023
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Expired (city: Expired)
- Reported cost: $22,000
- 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 12:50 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/