Millennium Centre
33 W Ontario St · Chicago, IL, 60654
Also listed as 600 N Dearborn St
Active renovation
ACTIVE
PERMIT SET
RENOVATION
Largest permit
$350K
Window
Aug 26, 2026
Permits
1
Parties
6
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.
46
/ 100
Medium
Why this score:
Recent permit activity
Related permit history
Major construction activity
Active permits on site
Significant reported costs
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 1 permit on this record| Permit | Description | Status | Contractor | ||
|---|---|---|---|---|---|
101084857 Renovation | Interior renovation of a first-floor commercial tenant space, changing the occupancy from office to mercantile. | JUL 31, 2026 | Active | $350,000 | 41 North Contractors LLC |
Permit values are as reported at filing and may be revised on amendment. Individual permits can overlap in physical scope.
Why this project matters
COST
$350K largest permit, renovation
Max reported cost; not a summed project total
CONTRACTOR
41 North Contractors LLC is the linked general contractor
Named on linked permits for this site
Key parties
General Contractor
41 North Contractors LLC(630) 737-1018
Electrical
Edge Electrical Systems(847) 380-8979
Mechanical
Airtech Heating & Air Conditioning Corp(630) 530-2442
Plumbing
Jb Plumbing(847) 871-3295
Owner
Sp Ontario Loan LLCNo contact on file
Architect
Styer Eric LNo contact on file
6 parties on this project
Location
1 site · Chicago
Sources: City of Chicago Dept. of Buildings permit feed · Cook County Assessor parcel records
Source Chicago Building Permits · Last calculated Sep 8, 2026