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Research/Chicago/10 South LaSalle
Public SeedReviewed August 14, 2026

10 South LaSalle

10 S LaSalle St, Chicago, IL 60603

QUALITY STATE

50% provisional source coverage

USE BOUNDARY

Not verified · Not dispatch ready

Direct answer

10 South LaSalle is a 37-story Loop office tower also known historically as Chemical Plaza, Manufacturers Hanover Plaza and Chase Plaza. Feil presents the property in its portfolio, while 2025 foreclosure reporting leaves current title and control unresolved. No current operating-rule package was found. The building is Graph Mapped, not Verified or Dispatch Ready.

Completed1986Published property record
Stories37Published building identity
Critical fields sourced50/10050% provisional coverage
Dispatch readyNoLive accuracy audit required
01

Canonical identity

This Public Seed resolves the tower identity without merging adjacent or underlying structures. It preserves title risk and the large spread among reported area measures, and it excludes historical brochure claims from current dispatch use.

Property typeOffice
Management routeNo current property-management office or operating contact was established. Transwestern's Katie Steele, Kathleen Bertrand and Charlotte Evans are published leasing contacts only.
Ownership claimFeil presents the property in its portfolio, but January 2025 foreclosure reporting creates unresolved legal-title and control risk around 10 South LaSalle Owner LLC.
Location41.88161, -87.63273
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 area871,962 sq ftCity-reported gross floor area for data year 2023
CTBUH gross floor area733,625 sq ftTechnical database measure
Transwestern listing size776,139 sq ftCurrent brokerage listing measure
03

What public guidance supports

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

Title and control

Feil's portfolio attribution is public, but 2025 foreclosure reporting leaves current title, receiver status and operating authority unresolved.

Portfolio reviewed August 14, 2026; litigation reported January 13, 2025

Leasing

Transwestern advertises the property and names brokerage contacts. That does not confer building-management or work-authorization authority.

Live listing reviewed August 14, 2026

Physical measures

Sources agree on a 37-story office tower but publish materially different area and completion-year figures. The measures remain source-specific.

Reviewed August 14, 2026

Operating rules

No current authoritative building-specific visitor, dock, freight, move, COI, emergency, life-safety, telecom or power package was found.

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 currently owns and manages 10 South LaSalle?+

Feil remains a public portfolio signal, but foreclosure reporting prevents a confident current-title or control claim. The manager is unknown.

02Is the candidate parcel verified?+

No. PIN 17-16-203-009-0000 is a commercial-data candidate and is not merged.

03Can the historical brochure be used for dispatch?+

No. Its move, freight, security, telecom and power claims are undated and non-current.

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, foreclosure disposition, receiver status and property manager.
  2. 02Official parcel identity, boundaries and relationship to adjoining structures.
  3. 03Visitor, parking, dock, freight, move, COI and vendor-authorization procedures.
  4. 04Emergency, life-safety, security and after-hours escalation procedures.
  5. 05Telecom carriers, riser access, demarcation, power capacity and redundancy.
  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
    Chicago benchmarking record ↗

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

  2. 02
    CTBUH building record ↗

    Technical building database · Supports: Aliases, office use, floors, height, architect and 1986 completion

  3. 03
    Transwestern property page ↗

    Brokerage first party · Supports: Listing size, stories, elevators, amenities and leasing contacts

  4. 04
    Feil portfolio ↗

    Owner-side first party · Supports: Portfolio attribution only; not current title proof

  5. 05
    10 South LaSalle site ↗

    Building marketing site · Supports: Amenity presentation only; no operating rules

  6. 06
    Foreclosure report ↗

    Specialist real-estate reporting, January 13, 2025 · Supports: Reported foreclosure and title/control risk

  7. 07
    Cook County GIS guidance ↗

    Cook County · Supports: Official parcel-validation path only