# Alteration or repair permit 100683883 at 333 E Ontario St, Chicago

Chicago Department of Buildings permit 100683883: issued Jan 19, 2017 for alteration or repair work at 333 E Ontario St. Self-cert: interior alterations to existing 1st & 3rd floor to include selective demolition and construction for leasing and management offices, dry cleaner store (no dry cleaning on premises), new mailrooms, game room, and fitness center lounge. Exiting/proposed use: a2.

- Permit number: 100683883
- Issued: Jan 19, 2017
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Finished (city: Complete)
- Reported cost: $2,500,000
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/333-e-ontario-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-06 16:12 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 333 E Ontario St: https://nearbypermits.com/chicago/address/333-e-ontario-st/