307 N Michigan Ave
Comprehensive interior alterations and tenant build-outs are underway across multiple levels of an existing office building, including the ground-floor lobby and the 14th floor. Scope of work includes selective demolition, partition wall reconfigurations, and associated mechanical, electrical, and plumbing upgrades to update the office spaces.
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 |
|---|---|---|
| High | Major construction permits |
Permit ledger
All 2 permits on this record| Permit | Description | Status | Contractor | ||
|---|---|---|---|---|---|
101086500 Renovation | Interior alterations to an existing ground-floor office lobby, including demolition, new partitions, mechanical, and electrical work with no plumbing or change of use. | JUL 31, 2026 | Active | $414,000 | Knudsen Construction Inc |
101082990 New Construction | Interior renovation of a 14th-floor office space, including demolition, new partitions, and MEP updates with no structural work or change of use. | MAY 11, 2026 | Active | $950,000 | Knudsen Construction Inc |
Key parties
Sources: City of Chicago Dept. of Buildings permit feed · Cook County Assessor parcel records
Source Chicago Building Permits · Last calculated Oct 11, 2026
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