233 North Michigan Avenue
233 N Michigan Ave, Chicago, IL 60601
60% provisional source coverage
USE BOUNDARYNot verified · Not dispatch ready
233 North Michigan Avenue, marketed as Two Illinois Center, is a 32-story East Loop office building tied to Cook County PIN 17-10-301-013-0000. Public evidence supports a dated AmTrust portfolio relationship and Stream leasing assignment, but not current deed ownership, property management or operating rules.
Canonical identity
This Public Seed resolves the building and parcel while keeping 233 N Michigan distinct from the related 111 E Wacker tower. Marketing-only access and security features are not treated as current operating instructions.
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.
What public guidance supports
These are sourced research answers, not permission to enter, reserve, submit, or dispatch. Current affected-party authorization remains required.
Building and parcel
Cook County directly ties 233 N Michigan Avenue to PIN 17-10-301-013-0000.
2025 certified values; captured August 14, 2026Campus boundary
233 N Michigan is part of Illinois Center with 111 E Wacker, but the towers remain distinct and no shared operating rule is inferred.
Sources reviewed August 14, 2026Leasing route
Stream's 2023 announcement assigns leasing for AmTrust's Chicago portfolio, including this building. That dated assignment is not property-management or dispatch authority.
Assignment dated September 28, 2023Current operating rules
No authoritative current public source established dock, freight, move, COI, access, life-safety, telecom, demarc or dispatch procedures.
Public-source review completed August 14, 2026Questions this record answers
Each concise answer includes the same caveats shown elsewhere on the page.
01Is Two Illinois Center the same building as 111 E Wacker?+
No. They are related towers within Illinois Center and must remain separate building identities.
02Who owns and manages 233 North Michigan?+
AmTrust is supported as a 2023 portfolio relationship. Current deed ownership and the named current property manager remain unconfirmed.
03Does 24/7 access mean unrestricted entry?+
No. It is marketing language, not a current authorization or visitor procedure.
04How can I improve this record?+
Use Get early access to submit a correction or public handbook, dock guide, move rules or COI package. Choose public-display, verification-only or private-retention permission.
Explicit unknowns
Anything operationally material that is stale, incomplete, or unconfirmed remains visible here.
- 01Current deed owner and named managing agent.
- 02Current management office and after-hours operating contact.
- 03Current dock, freight, move, COI, visitor, badge, security and access rules.
- 04Current life-safety, emergency, telecom and demarc procedures.
- 05Independent affected-party confirmation or live-job accuracy audit.
Evidence register
Source links are direct. Authority and supported claim groups are stated so readers can inspect the underlying record.
- 01Cook County PIN details ↗
Cook County Assessor · Supports: PIN, address, classification, land area and assessment history
- 02Two Illinois Center listing ↗
VTS owner-side marketplace · Supports: Alias, physical facts, campus relationship and high-level marketing features
- 03Stream leasing announcement ↗
Stream Realty first-party announcement · Supports: Dated AmTrust portfolio and Stream leasing relationship
- 04Chicago building permits ↗
City of Chicago · Supports: Official permit dataset provenance