# Monthly Maintenance Permit permit B200507451 at 20 N Wacker Dr, Chicago

Chicago Department of Buildings permit B200507451, issued Aug 19, 2026 for 20 N Wacker Dr: monthly maintenance permit. Electrical maintenance permit. Occupancy: business. Start date: 9/1/2026. End date: 10/1/2026. All work under this permit must be performed by employees of the listed electrical contractor. The electrical contractor must maintain complete written records of all work performed under this permit and make those records available to the building commissioner upon request.

- Permit number: B200507451
- Issued: Aug 19, 2026
- Type: Monthly Maintenance Permit
- Status: Active
- Reported cost: Not listed
- Community area: Loop (32)
- All permits at this address: https://nearbypermits.com/chicago/address/20-n-wacker-dr/

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Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-01 10:21 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/