# Roofing permit 100656120 at 100 E Ontario St, Chicago

Chicago Department of Buildings permit 100656120: issued Jun 20, 2016 for roofing work at 100 E Ontario St. Replacement of rooftop unit rtu-9 & make up air unit mu-1 with one aaon 15 ton rtu and one rupp air management 10 ton make up air unit. Both units are self contained, air cooled, r410a, located on the roof.

- Permit number: 100656120
- Issued: Jun 20, 2016
- Type of work: Roofing (city: Permit - easy permit process)
- Status: Issued (city: not listed)
- Reported cost: Not listed
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/100-e-ontario-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-05 21:30 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 100 E Ontario St: https://nearbypermits.com/chicago/address/100-e-ontario-st/