# Mechanical (HVAC) permit B200470901 at 4000 W Diversey Ave, Chicago

Chicago Department of Buildings permit B200470901: issued May 21, 2026 for mechanical (hvac) work at 4000 W Diversey Ave. Repair/replacement affecting 1 systems : 10 rooftop packaged unit(lg arum241dte5). Electrical work under this permit = no. Locations: 2 residential unit(s), 0 non-residential unit(s), 2 interior common areas, exterior work, roof top, replacing 10 condensing units.

- Permit number: B200470901
- Issued: May 21, 2026
- Type of work: Mechanical (HVAC) (city: Mechanical work, permit – express permit program)
- Status: Issued (city: Active)
- Reported cost: $120,000
- ZIP code: 60639 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/4000-w-diversey-ave/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-05 17:20 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 4000 W Diversey Ave: https://nearbypermits.com/chicago/address/4000-w-diversey-ave/