142 E Ontario St
142 E Ontario St · Chicago, IL, 60611
Active renovation
ACTIVE
PERMIT SET
RENOVATION
Largest permit
$164K
Window
Jul 13, 2026 – Jul 16, 2026
Permits
2
Parties
7
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.
45
/ 100
Medium
Why this score:
Recent permit activity
Related permit history
Major construction activity
Active permits on 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 | ||
|---|---|---|---|---|---|
101085885 Renovation | Interior alterations to a 5th-floor office suite, including new partitions, doors, ceilings, lighting, millwork, finishes, and associated MEP work. | JUL 13, 2026 | Active | $133,290 | Tw Chicago LLC |
101085366 Renovation | SELF-CERT 2019 CBRC: INTERIOR ALTERATIONS IN EXISTING OFFICE BUILDING ON THE 12TH FLOOR, OFFICE SUITE 1250. NEW PARTITIONS, DOORS, CEILINGS, LIGHTING, MILLWORK, AND FINISHES. ASSOCIATED ELECTRICAL, MECHANICAL AND PLUMBING WORK AS PER PLANS. (OCCUPANCY GROUP B; TYPE 1A CONSTRUCTION) | JUL 6, 2026 | Active | $163,614 | Tw Chicago 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
ACTIVITY
2 major construction permits on site
CONTRACTOR
Tw Chicago LLC is the linked general contractor
Named on 2 permits for this site
COST
$164K largest permit, renovation
Max reported cost; not a summed project total
Key parties
General Contractor
Tw Chicago LLC(630) 546-2825
Electrical
Usdata Comm(630) 688-0195
Mechanical
General Refrigeration LLC Dba Premistar North(847) 695-1177
Plumbing
Carbone Plumbing Inc(630) 222-9768
Owner
American Osteopathic AssociationNo contact on file
Architect
Jordan James DNo contact on file
1 more party 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