372 W ONTARIO ST
Special-CBDOffice · Chicago · 60654
At a glance
372 W ONTARIO ST in Chicago, IL is listed on the Chicago / Cook County property roll as “Special-CBDOffice”, PIN 17091270160000. The roll records 45,000 sq ft of building area, a 1904 build year and an assessed value of $8,275,000. 1 active business locations at this address appear in public records.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| SEATON CORPORATION | — | Feb 2004 | Chicago business licence | address · medium |
Chicago / Cook County assessment roll
Parcel record
| Field | Value |
|---|---|
| PIN | 17091270160000 |
| Site address | 372 W ONTARIO ST |
| Land use (DOR) | 5-91 — Special-CBDOffice |
| Building area (actual) | 45,000 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 7,500 sq ft |
| Year built | 1904 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $8,275,000 |
Recorded owner (assessment roll)
372 W ONTARIO LP
Owner mailing address: 306 W ERIE ST STE 700, CHICAGO, IL, 60654
10 Chicago office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 372 W ONTARIO ST
- City
- Chicago
- ZIP
- 60654
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 372 W ONTARIO ST compare with other Chicago office buildings?
At 45,000 sq ft, 372 W ONTARIO ST is about 22% larger than the average office building on the Chicago / Cook County roll, which comes to 36,812 sq ft across 9,438 buildings.
Its assessed value works out to $184 per square foot of building area, against $158 across all office floor area on the roll.
Does the owner of 372 W ONTARIO ST hold other Chicago office property?
10 Chicago office properties (10 parcels, 691.6K sq ft) are recorded to 8 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What has happened at 372 W ONTARIO ST recently?
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Special-CBDOffice” mean for this parcel?
The Chicago / Cook County roll classifies PIN 17091270160000 as “Special-CBDOffice” (use code 5-91). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 372 W ONTARIO ST?
The recorded owner on the Chicago / Cook County assessment roll (current) is 372 W ONTARIO LP. Owner mailing address on file: 306 W ERIE ST STE 700, CHICAGO, IL, 60654.
What companies have offices at 372 W ONTARIO ST?
1 active business locations at this building appear in Chicago / Cook County public records, including SEATON CORPORATION. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 372 W ONTARIO ST?
The Chicago / Cook County roll records 45,000 sq ft of building area, a build year of 1904. It sits on a 7,500 sq ft lot.
What is the assessed value of 372 W ONTARIO ST?
$8,275,000 on the Chicago / Cook County roll. Assessed values are taxable-roll figures, not market prices.
What is the PIN for 372 W ONTARIO ST?
PIN 17091270160000, site address 372 W ONTARIO ST, Chicago. It is the key to look the parcel up in the Cook County Assessor parcel, commercial-valuation and sales datasets (Chicago / Cook County).
More around 372 W ONTARIO ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Chicago / Cook County — Cook County Assessor parcel, commercial-valuation and sales datasets (owner names, mailing addresses, priced sales with buyer and seller); City of Chicago active business licences for occupancy. Licence addresses are street-level, and state-licensed professions are absent from the city roll.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: Chicago / Cook County assessment roll, PIN 17091270160000.
About this data
Source: Cook County Assessor parcel, commercial-valuation and sales datasets (Chicago / Cook County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “372 W ONTARIO ST, Chicago, IL (PIN 17091270160000)”, https://buildingcensus.com/offices/chicago/office-building-2e0985d0 (data as of September 20, 2026).