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Research/Chicago/190 South LaSalle
Public SeedReviewed August 14, 2026

190 South LaSalle

190 S LaSalle St, Chicago, IL 60603

QUALITY STATE

50% provisional source coverage

USE BOUNDARY

Not verified · Not dispatch ready

Direct answer

190 South LaSalle is a standalone Loop office tower historically marketed as the U.S. Bank Building. Namdar Realty Group currently lists it as owned, and 2025 reporting describes a Namdar and Mason acquisition from Beacon. The exact legal entity, parcel merge, property manager and operating rules remain unresolved. The building is Graph Mapped, not Verified or Dispatch Ready.

Completed1987Published property record
Stories40Published building identity
Critical fields sourced50/10050% provisional coverage
Dispatch readyNoLive accuracy audit required
01

Canonical identity

This Public Seed resolves the building identity and time-bounds the reported ownership transition. It distinguishes leasing contacts and a telecom service-location listing from operational authority, and it preserves conflicts in completion year, floor count and lot area.

Property typeOffice
Management routeNo current property-management office or operating contact was established. JLL's Mike Curran and Annie Nicolau are published leasing contacts only.
Ownership claimNamdar's current portfolio lists the property as owned. Trade reporting identifies Namdar and Mason Asset Management as 2025 buyers, but the legal holding entity and Mason's current role are not deed-confirmed.
Location41.87976, -87.63269
02

Area claims stay separate

Gross, rentable, and office area are not interchangeable. Factum stores each measurement with its source meaning instead of choosing a convenient single number.

Chicago benchmarking area883,718 sq ftCity-reported gross floor area for data year 2023
Namdar GLA798,782 sq ftCurrent owner portfolio source-specific gross leasable area
03

What public guidance supports

These are sourced research answers, not permission to enter, reserve, submit, or dispatch. Current affected-party authorization remains required.

Ownership signal

Namdar lists the building in its current owned portfolio; 2025 reporting also names Mason as an acquisition partner. Current legal title and management remain unverified.

Portfolio reviewed August 14, 2026; transaction reported December 2025

Leasing

JLL advertises space and names brokerage contacts. Leasing representation does not authorize access, vendors, moves, freight, COIs or after-hours work.

Live listing reviewed August 14, 2026

Telecom

Cogent lists the address as a service location. This is not proof of suite availability, riser access, demarcation, exclusivity or ordering authority.

Provider directory reviewed August 14, 2026

Operating rules

No current authoritative building-specific package established visitor, dock, freight, move, COI, vendor, emergency, life-safety or after-hours procedures.

Public-source review completed August 14, 2026
04

Questions this record answers

Each concise answer includes the same caveats shown elsewhere on the page.

01Who owns and manages 190 South LaSalle?+

Namdar is the strongest current owner signal. Mason is a reported acquisition partner. The legal entity and current property manager are not yet verified.

02Is the candidate parcel verified?+

No. PIN 17-16-210-015-0000 is a commercial-data candidate and was not confirmed through the Cook County record.

03Are access, move or COI rules public?+

No current authoritative building-specific operating package was found.

04How can I improve this record?+

Submit a correction or dated tenant handbook, dock/freight guide, move rule or COI package and choose public-display, verification-only or private-retention permission. Contributions enter review and never overwrite canonical claims directly.

05

Explicit unknowns

Anything operationally material that is stale, incomplete, or unconfirmed remains visible here.

  1. 01Current legal owner entity, parcel identity and complete title relationship.
  2. 02Current property manager, management office, security desk and after-hours contact.
  3. 03Visitor, parking, dock, freight, move, COI and vendor-authorization procedures.
  4. 04Emergency, life-safety, shutdown and after-hours escalation procedures.
  5. 05Telecom carriers, riser access, demarcation, electrical capacity and outage procedure.
  6. 06Affected-party confirmation or a live-job accuracy audit.
06

Evidence register

Source links are direct. Authority and supported claim groups are stated so readers can inspect the underlying record.

  1. 01
    Namdar portfolio ↗

    Owner first party · Supports: Current owner-portfolio relationship and source-specific GLA

  2. 02
    JLL property listing ↗

    Brokerage first party · Supports: Address, leasing availability and brokerage contacts

  3. 03
    Chicago Architecture Center ↗

    Architecture institution · Supports: Identity, commercial use, design and 1987 completion

  4. 04
    John Buck project history ↗

    Historical developer first party · Supports: Development, former management/leasing and 1986 completion claim

  5. 05
    CoStar transaction report ↗

    Specialist real-estate reporting, December 3, 2025 · Supports: Reported completed sale from Beacon to Namdar and Mason

  6. 06
    Cogent service locations ↗

    Telecom provider first party · Supports: Address-level service-location listing only

  7. 07
    Chicago benchmarking record ↗

    City of Chicago · Supports: Annual reported identity, type, year and gross floor area