# Mechanical (HVAC) permit B200509384 at 21 E Chestnut St, Chicago

Chicago Department of Buildings permit B200509384: issued Sep 11, 2026 for mechanical (hvac) work at 21 E Chestnut St. Repair/replacement affecting 1 systems : 1 rooftop packaged unit(carrier 48feem12a3a6-0a0a0 located on roof). Electrical work under this permit = yes. Locations: 0 residential unit(s), 1 non-residential unit(s), exterior work, roof over 1 story portion of building above tenant.

- Permit number: B200509384
- Issued: Sep 11, 2026
- Type of work: Mechanical (HVAC) (city: Mechanical work, permit – express permit program)
- Status: Issued (city: Active)
- Reported cost: $15,000
- ZIP code: 60610 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/21-e-chestnut-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-06 20:45 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 21 E Chestnut St: https://nearbypermits.com/chicago/address/21-e-chestnut-st/