836 W WELLINGTON AVE
Office-Medical Office Buildings/Spaces · Chicago · 60657
At a glance
836 W WELLINGTON AVE in Chicago, IL is listed on the Chicago / Cook County property roll as “Office-Medical Office Buildings/Spaces”, PIN 14292120210000. The roll records 706,230 sq ft of building area, a 1970 build year and an assessed value of $1,090,000. 6 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 — 6 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| ADVOCATE ILLINOIS MASONIC MEDICAL CENTER | # 1 | Feb 2025 | Chicago business licence | address match · high |
| LUNA FLOWERS | — | Jan 2023 | Chicago business licence | address match · high |
| LORI' S GIFTS # 215 | — | Jul 2021 | Chicago business licence | address match · high |
| AUTOPARK | — | Jul 2019 | Chicago business licence | address match · high |
| ILLINOIS MASONIC | — | Jul 2015 | Chicago business licence | address match · high |
| Advocate Charitable Foundation | — | Feb 2006 | Chicago business licence | address match · high |
Chicago / Cook County assessment roll
Parcel record
| Field | Value |
|---|---|
| PIN | 14292120210000 |
| Site address | 836 W WELLINGTON AVE |
| Land use (DOR) | 5-91 — Office-Medical Office Buildings/Spaces |
| Building area (actual) | 706,230 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 299,554 sq ft |
| Year built | 1970 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $1,090,000 |
Recorded owner (assessment roll)
ADVOCATE HEALTH & HOSPITALS
Owner mailing address: 2025 WINDSOR DR, OAKBROOK, IL, 60523
44 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
- 836 W WELLINGTON AVE
- City
- Chicago
- ZIP
- 60657
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 836 W WELLINGTON AVE compare with other Chicago office buildings?
At 706,230 sq ft, 836 W WELLINGTON AVE is about 19 times the size of 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 $2 per square foot of building area, against $158 across all office floor area on the roll.
Does the owner of 836 W WELLINGTON AVE hold other Chicago office property?
44 Chicago office properties (44 parcels, 994.7K sq ft) are recorded to 5 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 836 W WELLINGTON AVE recently?
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Office-Medical Office Buildings/Spaces” mean for this parcel?
The Chicago / Cook County roll classifies PIN 14292120210000 as “Office-Medical Office Buildings/Spaces” (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 836 W WELLINGTON AVE?
The recorded owner on the Chicago / Cook County assessment roll (current) is ADVOCATE HEALTH & HOSPITALS. Owner mailing address on file: 2025 WINDSOR DR, OAKBROOK, IL, 60523.
What companies have offices at 836 W WELLINGTON AVE?
6 active business locations at this building appear in Chicago / Cook County public records, including ADVOCATE ILLINOIS MASONIC MEDICAL CENTER, LUNA FLOWERS, LORI' S GIFTS # 215, AUTOPARK, ILLINOIS MASONIC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 836 W WELLINGTON AVE?
The Chicago / Cook County roll records 706,230 sq ft of building area, a build year of 1970. It sits on a 299,554 sq ft lot.
What is the assessed value of 836 W WELLINGTON AVE?
$1,090,000 on the Chicago / Cook County roll. Assessed values are taxable-roll figures, not market prices.
What is the PIN for 836 W WELLINGTON AVE?
PIN 14292120210000, site address 836 W WELLINGTON AVE, 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 836 W WELLINGTON AVE
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 14292120210000.
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, “836 W WELLINGTON AVE, Chicago, IL (PIN 14292120210000)”, https://buildingcensus.com/offices/chicago/office-building-2ab693ce (data as of September 20, 2026).