What was permitted
For residents and business owners in Chicago's Near North Side, understanding the costs associated with safety system upgrades is important. This permit covers modifications to an existing fire alarm system within Suite 540 of a high-rise building at 645 N Michigan Ave.
The work involves an existing system with voice communication and supervision, issued on June 29, 2026. Contech - MSI Co. is the contractor for this essential safety upgrade, which is part of a larger building permit.
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | B200473532 |
|---|---|
| Work permit # | — |
| Job filing number | — |
| Work type | Fire Alarm System |
| Status | ACTIVE |
| Job description | FIRE ALARM: MODIFICATION OF EXISTING SYSTEM. ASSOCIATED BUILDING PERMIT:101081306. AFFECTS: 0 DWELLING UNITS; 1 NON-RESIDENTIAL UNITS. HIGH-RISE BUILDING: YES. VOICE COMMUNICATION: YES. SPECIAL LOCKING: YES. MONITORING TYPE: SUPERVISING STATION . SPECIFIC LOCATION: SUITE 540. |
| Floor / unit | — |
| Estimated cost | Not reported |
| Approved | June 25, 2026 |
| Issued | June 29, 2026 |
| Expires | — |
| BBL | — |
| BIN | — |
Property owner
645 N Michigan LLC
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