Preservationists Sought Landmark Status for O'Leary Mansion
Advocates presented the 125-year-old Chicago property to a city commission to stop its potential demolition.
Updated on Oct. 9, 2026 in Home Renovation

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On September 21, 2026, preservation groups recommended that the City of Chicago grant landmark status to the historic O'Leary mansion. The move aims to protect the 33-room residence from being demolished after the property was previously listed for sale.
Why it matters
Preservationists argue the site holds immense historical value due to its Renaissance Revival design and its connection to the prominent O'Leary family. Securing landmark status would provide legal protections for the home as it faces potential destruction in demolition court.
The 33-room mansion at 726 W. Garfield Blvd. was built in 1901 and spans approximately 125 years of history. It must meet seven established criteria set by the city to receive official landmark status.
The players
Zachary Taylor Davis
He was a noted architect responsible for the design of the Renaissance Revival mansion on Garfield Boulevard.
Commission of Chicago Landmarks
This official municipal body reviews building proposals to determine if properties meet the necessary criteria for historic protection.
James O'Leary
He was a prominent historical figure who resided in the mansion until he died there in 1925.
The details
Designed by architect Zachary Taylor Davis, the Renaissance Revival home was the residence of James O'Leary until his death in 1925. Advocacy groups are now working to monitor the building while seeking a new owner to prevent the structure from being lost to demolition.
Timeline
The home was built in 1901.
James O'Leary passed away in the house in 1925.
The property was listed for sale in May 2024.
Preservationists presented the landmark recommendation on September 21, 2026.
Culture Shift
This effort reflects a growing trend in urban planning where preservation groups leverage municipal codes to counter the demolition of historic estates. The push aligns with broader movements to protect legacy architecture from the current cycle of real estate redevelopment.
The potential landmark designation could restrict future renovations or exterior modifications for the owner of the property. Local residents may see increased oversight in the Englewood area if the site is officially protected as a cultural landmark.
The takeaway
Historic preservation efforts require navigating complex municipal ordinances to save architectural landmarks from demolition. Homeowners in historic districts should remain aware of how landmark designations impact their ability to alter or sell their properties.
Further reading
Learn more about the ongoing efforts to protect historical residential architecture in Chicago Home Renovation.
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Should your local government prioritize granting landmark status to historic buildings to prevent their demolition?









