# Alteration or repair permit 101065308 at 150 E Ontario St, Chicago

Chicago Department of Buildings permit 101065308: issued May 19, 2025 for alteration or repair work at 150 E Ontario St. Spr 2019 CBRC: install three (3) natural gas-fired microturbine generators with hot water exhaust heat recovery coils on proposed steel framework outdoors on the existing roof of an existing high-rise hotel as per plans. The hot water piping with glycol solution will connect heat recovery coils to the existing building's hot water heating system through a hydraulic isolation heat exchanger in the building's existing mechanical room. Work to include mechanical, electrical, and structural. No change in use or occupancy. Construction type 1a; occupancy: r-1 hotel).

- Permit number: 101065308
- Issued: May 19, 2025
- Type of work: Alteration or repair (city: Permit - renovation/alteration)
- Status: Issued (city: Active)
- Reported cost: $500,000
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/150-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 13:00 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 150 E Ontario St: https://nearbypermits.com/chicago/address/150-e-ontario-st/