# Mechanical (HVAC) permit B200439169 at 77 E Walton St, Chicago

Chicago Department of Buildings permit B200439169: issued Sep 16, 2025 for mechanical (hvac) work at 77 E Walton St. Repair/replacement affecting 1 systems : 2 boiler - hot water(aerco, bmke432, mechanical room). Electrical work under this permit = no. Locations: 0 residential unit(s), 0 non-residential unit(s), 1 interior common areas, 29th floor mechanical room.

- Permit number: B200439169
- Issued: Sep 16, 2025
- Type of work: Mechanical (HVAC) (city: Mechanical work, permit – express permit program)
- Status: Issued (city: Active)
- Reported cost: $350,000
- ZIP code: 60611 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/77-e-walton-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-06 21:55 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 77 E Walton St: https://nearbypermits.com/chicago/address/77-e-walton-st/