# Alteration or repair permit 100394909 at 441 E Ontario St, Chicago

Chicago Department of Buildings permit 100394909: issued May 23, 2011 for alteration or repair work at 441 E Ontario St. Revision to permit #100371775; deletion of full height fire glass around the 2 story space above library and music area; the addition of 2 hour rated double egress doors to isolate 2 story space; relocation of 2 classroom entry doors. 441 East ontario street.

- Permit number: 100394909
- Issued: May 23, 2011
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Finished (city: Complete)
- Reported cost: Not listed
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/441-e-ontario-st/

---
Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-06 08:58 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

This site provides applications using data that has been modified for use from its original source, www.cityofchicago.org, the official website of the City of Chicago. The City of Chicago makes no claims as to the content, accuracy, timeliness, or completeness of any of the data provided at this site. The data provided at this site is subject to change at any time. It is understood that the data provided at this site is being used at one's own risk.

Every permit at 441 E Ontario St: https://nearbypermits.com/chicago/address/441-e-ontario-st/