800 S WELLS ST
Special-CBDOffice · Chicago · 60607
At a glance
800 S WELLS ST in Chicago, IL is listed on the Chicago / Cook County property roll as “Special-CBDOffice”, PIN 17164010110000. The roll records 308,182 sq ft of building area, a 1983 build year and an assessed value of $29,215,000. 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 |
|---|---|---|---|---|
| RIVER CITY CARWASH | — | Aug 2007 | Chicago business licence | address match · high |
| LUNA MEDICAL INC | — | May 2007 | Chicago business licence | address match · high |
| RIVER CITY RESIDENCES, LLC | — | May 2007 | Chicago business licence | address match · high |
| Worldcom | # 225 | Aug 2006 | Chicago business licence | address match · high |
| WVAZ | — | May 2002 | Chicago business licence | address match · high |
| L A FIT, L A FITNESS AND PRO RESULTS | — | — | Chicago business licence | address match · high |
Chicago / Cook County assessment roll
Parcel record
| Field | Value |
|---|---|
| PIN | 17164010110000 |
| Site address | 800 S WELLS ST |
| Land use (DOR) | 5-97, 5-97 — Special-CBDOffice |
| Building area (actual) | 308,182 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 96,920 sq ft |
| Year built | 1983 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $29,215,000 |
Recorded owner (assessment roll)
MARC REALTY LLC
Owner mailing address: 55E JACKSON BLVD #500, CHICAGO, IL, 60604
6 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
- 800 S WELLS ST
- City
- Chicago
- ZIP
- 60607
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 800 S WELLS ST compare with other Chicago office buildings?
At 308,182 sq ft, 800 S WELLS ST is about 8 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 $95 per square foot of building area, against $158 across all office floor area on the roll.
Does the owner of 800 S WELLS ST hold other Chicago office property?
6 Chicago office properties (6 parcels, 624.8K sq ft) are recorded to 3 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 800 S WELLS 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 17164010110000 as “Special-CBDOffice” (use code 5-97, 5-97). 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 800 S WELLS ST?
The recorded owner on the Chicago / Cook County assessment roll (current) is MARC REALTY LLC. Owner mailing address on file: 55E JACKSON BLVD #500, CHICAGO, IL, 60604.
What companies have offices at 800 S WELLS ST?
6 active business locations at this building appear in Chicago / Cook County public records, including RIVER CITY CARWASH, LUNA MEDICAL INC, RIVER CITY RESIDENCES, LLC, Worldcom, WVAZ. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 800 S WELLS ST?
The Chicago / Cook County roll records 308,182 sq ft of building area, a build year of 1983. It sits on a 96,920 sq ft lot.
What is the assessed value of 800 S WELLS ST?
$29,215,000 on the Chicago / Cook County roll. Assessed values are taxable-roll figures, not market prices.
What is the PIN for 800 S WELLS ST?
PIN 17164010110000, site address 800 S WELLS 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 800 S WELLS 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 17164010110000.
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, “800 S WELLS ST, Chicago, IL (PIN 17164010110000)”, https://buildingcensus.com/offices/chicago/office-building-d487460d (data as of September 20, 2026).