# Roofing permit B200447274 at 320 N Dearborn St, Chicago

Chicago Department of Buildings permit B200447274: issued Nov 20, 2025 for roofing work at 320 N Dearborn St. Scope: 5,060 SQ FT partial concrete repairs and waterproofing, reinforce trench drain system and associated piping, cladding repair and replacement at stair location at private plaza (no work to building structure). Locations: 0 residential unit(s), 1 non-residential unit(s), exterior work, plaza.

- Permit number: B200447274
- Issued: Nov 20, 2025
- Type of work: Roofing (city: Other work, permit – express permit program)
- Status: Issued (city: Active)
- Reported cost: $1,500,000
- ZIP code: 60654 (derived from location)
- All permits at this address: https://nearbypermits.com/chicago/address/320-n-dearborn-st/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-10 11:54 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

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Every permit at 320 N Dearborn St: https://nearbypermits.com/chicago/address/320-n-dearborn-st/