645 N Michigan Ave
Interior speculative office build-outs are underway across multiple suites on the fifth floor of an existing commercial high-rise. Construction activity focuses on tenant space fit-outs to prepare individual office suites for future business occupancy.
Largest single reported permit cost — not a summed project total. Individual permit values can overlap in scope.
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Activity
How much relevant permit activity is on this site.
Trade fit
How well this project matches each trade, from linked permits. Select a trade to filter parties & permits.
| Trade | Fit | Evidence |
|---|---|---|
| Medium | Major construction permits |
Permit ledger
All 2 permits on this record| Permit | Description | Status | Contractor | ||
|---|---|---|---|---|---|
101081306 Renovation | Interior build-out of a 5th-floor speculative office suite in an existing high-rise, with no change of use. | APR 20, 2026 | Active | $190,133 | Plan North Construction Services LLC |
101079902 Renovation | Interior build-out of a speculative office suite on the 5th floor (Suite 543) in an existing high-rise, with no change of use. | MAR 25, 2026 | Active | $222,718 | Plan North Construction Services LLC |
Key parties
Sources: City of Chicago Dept. of Buildings permit feed · Cook County Assessor parcel records
Source Chicago Building Permits · Last calculated Sep 9, 2026
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