Public Research

300 West Adams Street Office Building

built 1927 and with current city data crediting Jens J. Jensen, Designated as a Chicago landmark on May 13, 2009. the public record begins with concrete facts and can move outward into commercial development and architectural branding.

300 West Adams Street Office Building 300 W Adams St, Chicago, Illinois Precision: Exact

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Quick Take

  • Official status: Chicago individual landmark.
  • Address: 300 W Adams St.
  • Built: 1927.
  • Architect: Jens J. Jensen.

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Why It Matters

300 West Adams Street Office Building stabilizes commercial development, architectural branding, and corridor and downtown change in one public landmark record.

That public anchor is what allows later work on ownership, alteration, neighborhood setting, and interpretation to build outward in a disciplined way.

Field Network

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Research Narrative

Landmark Context

300 West Adams Street Office Building is anchored to 300 W Adams St before any deeper archive work begins. City records connect the site to a construction date of 1927 and credits Jens J. Jensen. It was designated on May 13, 2009. 300 West Adams Street Office Building already ties commercial development, architectural branding, and corridor and downtown change to one real building before archival digging begins.

300 West Adams Street Office Building reveals more once fieldwork compares storefront depth, upper-floor expression, and corner treatment, how the facade addresses pedestrian traffic, and later signage, infill, or reuse. That kind of reading often reveals how commercial architecture stayed visible even as the economic life around it changed.

Research Starting Points

300 West Adams Street Office Building can be checked against trade press and city directories, permit files and assessor records, and historic photographs and newspaper coverage when the designation summary runs out. That is usually how a short landmark record turns into a fuller account of use, alteration, and neighborhood setting.

300 West Adams Street Office Building still needs deeper source work, but the landmark record already keeps that work tied to one place.

Public Actions

Campaign / Petition Record

Ordered oldest to newest.

1927

Development

Construction period recorded in city landmark data

Chicago's public landmark data records 300 West Adams Street Office Building as built in 1927.

May 13, 2009

Designation

Chicago individual landmark designation

City of Chicago designated 300 West Adams Street Office Building as an individual landmark on May 13, 2009.

February 2026

Inventory

City landmark address list and data portal record

300 West Adams Street Office Building remains listed in Chicago's public individual-landmark address list and open-data record.

Signals

Latest Google News

Latest 3 stories

300 West Adams Street Office Building, Chicago, Illinois

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Sources

Source Trail

Chicago Landmark Name List 2025.6

institution

Use for official landmark status and naming.

City of Chicago Open Data: Individual Landmarks

dataset

Use for address, built date, architect, and point geometry in the city data portal.

Chicago Landmark Address List February 2026

institution

Use for address normalization and cross-checking the city's public landmark list.

Place Snapshot

Place
300 West Adams Street Office Building
Location
300 W Adams St, Chicago, Illinois
Coverage
Exact

Key Facts

Region
Chicago, Illinois / Midwest
Place type
Commercial Building
Current status
Preserved
Address
300 W Adams St
Built
1927
Architect
Jens J. Jensen
Designated
May 13, 2009

Design / Planning Timeline

Jens J. Jensen
1927

Milestone

Use as a starting point for confirming authorship against permits, drawings, and later landmark reports.

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