# Alteration or repair permit 101073978 at 142 E Ontario St, Chicago

Chicago Department of Buildings permit 101073978: issued Sep 15, 2025 for alteration or repair work at 142 E Ontario St. Self-cert 2019 CBRC: interior alterations in existing office building on the 9th floor, office suite 900. New partitions, doors, ceilings, lighting, millwork, and finishes. Electrical, mechanical and plumbing work as per plans. (Occupancy group B; type 1a construction).

- Permit number: 101073978
- Issued: Sep 15, 2025
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Finished (city: Complete)
- Reported cost: $450,000
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/142-e-ontario-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-07 16:39 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 142 E Ontario St: https://nearbypermits.com/chicago/address/142-e-ontario-st/