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Research/Chicago/300 North LaSalle
Public SeedReviewed August 16, 2026

300 North LaSalle

300 N LaSalle St, Chicago, IL 60654

QUALITY STATE

30% provisional source coverage

USE BOUNDARY

Not verified · Not dispatch ready

Direct answer

300 North LaSalle is a 60-story office tower at 300 N LaSalle Street on the Chicago River. Irvine Company publishes the property and describes committed long-term ownership; Cook County Assessor links the address to PIN 17-09-405-004-0000. Source conflicts remain for area, completion year, ZIP metadata and benchmark coordinates. The building is Graph Mapped, not Verified or Dispatch Ready.

CompletedUnknownNot yet resolved
Stories60Published building identity
Critical fields sourced3/1030% provisional coverage
Dispatch readyNoLive accuracy audit required
01

Canonical identity

This Public Seed resolves the tower and county parcel association while retaining source-specific measurements and withholding a City benchmark coordinate that conflicts with the property location. Current legal title, tenant roster and every dispatch-critical procedure remain unknown.

Property typeOffice
Management routeCurrent Irvine collateral identifies Irvine Management Company and customer resources; no current individual manager or authority matrix was reviewed.
Ownership claimIrvine first-party materials describe ownership and long-term commitment. Current recorder-confirmed fee title was not reviewed.
LocationNot independently verified
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 benchmark gross floor area1,506,959 sq ft2023 reporting record
Irvine published area1,300,000 sq ftRounded property-marketing figure; not normalized to benchmark gross 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.

Identity and parcel

The Irvine property page and Cook County Assessor support the 300 N LaSalle address and PIN 17-09-405-004-0000.

Public sources reviewed August 16, 2026

Ownership and management

Irvine publishes the property and describes ownership; the current legal-title chain and individual property-management authority remain unverified.

Current first-party material reviewed August 16, 2026

Operating rules

No authoritative current public source established visitor, loading, delivery, freight, contractor, after-hours, emergency, life-safety or telecom-riser procedures.

Public-source review completed August 16, 2026

Coordinates

The City benchmark coordinate materially conflicts with the property location and is not published for dispatch or routing.

2023 benchmark record reviewed August 16, 2026
04

Questions this record answers

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

01Who publishes 300 North LaSalle?+

Irvine Company publishes the property and describes its ownership commitment. That first-party statement is not a substitute for a current recorder title search.

02Which parcel is associated with the building?+

Cook County Assessor associates 300 N LaSalle Street with PIN 17-09-405-004-0000.

03Can this record be used for access or dispatch?+

No. Current visitor, dock, freight, safety, emergency and telecom-riser rules were not established, and a benchmark coordinate conflict remains.

04How can I improve this record?+

Submit a current title or manager record, tenant handbook, dock/freight guidance, move rules, COI package, emergency guidance or riser material and select public-display, verification-only or private-retention permission.

05

Explicit unknowns

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

  1. 01Current recorded fee owner, title chain and any leasehold or ground-lease split.
  2. 02A coordinate independently verified for routing or dispatch.
  3. 03Why benchmark record 250129 has a material geocode conflict despite its matching name and address.
  4. 04Current tenant roster, suites, occupancy and tenant-authorized contacts.
  5. 05Current individual property manager and operating authority matrix.
  6. 06Current visitor, loading, delivery, freight, contractor, after-hours, emergency, life-safety and telecom-riser procedures.
06

Evidence register

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

  1. 01
    300 North LaSalle property page ↗

    Owner and manager first party, reviewed August 16, 2026 · Supports: Address, tower scale, current published features, ownership claim and customer-resource context

  2. 02
    Cook County Assessor PIN 17-09-405-004-0000 ↗

    Cook County Assessor · Supports: Address, parcel identifier and assessment context

  3. 03
    Irvine modernization announcement ↗

    Owner first party, dated February 28, 2023 · Supports: Historical ownership statement and modernization program

  4. 04
    Chicago energy benchmarking record 250129 ↗

    City of Chicago · Supports: 2023 reporting area, year and energy fields; coordinate conflict remains visible

07

Public change history

Only meaningful, accepted public deltas appear here. The current record above remains canonical.

Published

300 North LaSalle

Factum published a source-bounded Public Seed for 300 North LaSalle, linking the county parcel while preserving conflicts in area, vintage, ZIP metadata and benchmark coordinates.

buildingPublic Seed4 cited sourcesView in changelog ↗