Commonwealth Development Partners and Triangle Capital Group have secured USD 113 million in financing to convert a vacant 25-storey office building at 500 North Michigan Avenue into 384 mixed-income rental flats in downtown Chicago. Santander Bank provided a dedicated construction loan of USD 71.5 million, while Washington Capital Management contributed USD 41.5 million in joint venture equity. JLL Capital Markets arranged the transaction via Chris Knight, Ryan Planek, and Annie Thomas.
The property was acquired by Commonwealth Development Partners and Triangle Capital Group last August for just USD 5 million. In April, Washington Capital Management purchased a 21,565 square foot retail space adjacent to the ground floor of the building from Commonwealth Development Partners for USD 41 million. Demolition of the 1960s building will not occur; instead, its historic architecture is to be preserved. The project aims to secure Federal Historic Tax Credits and also benefits from tax incentives under the Illinois Affordable Housing Special Assessment Program.
Strategic Location and High Demand
Robin Dean of Washington Capital Management described the joint venture between Commonwealth Development Partners and Triangle Capital Group as an “experienced sponsor team”. She highlighted 500 North Michigan Avenue as an “irreplaceable location and a thoughtful adaptive reuse strategy”. Dean expressed confidence that the property is well-positioned to meet the long-term demand for high-quality residential accommodation in downtown Chicago.
The building is located in the heart of the Chicago Loop on the famous “Magnificent Mile” in the city’s Streeterville neighbourhood, which includes key institutions such as Northwestern Memorial Hospital, Lurie Children's Hospital, and the University of Chicago Booth School of Business. The project will provide more than 250,000 square feet of rental residential space downtown. 320 units are planned at market rates, while 64 units will be designated as affordable housing.
Amenities and Completion
- —60 on-site parking spaces
- —Rooftop swimming pool
- —Fitness centre
- —Co-working areas
- —Theatre
- —Ground-floor retail spaces
Construction work for the conversion began in May 2026 and is scheduled for completion in March 2028. Matthew Faris of Commonwealth Development emphasised that, with its prime address in the centre of Chicago’s “Eds and Meds” district, the project is ideally positioned to benefit from Chicago's leading rental growth nationwide. He noted that multifamily rental rates in Chicago have risen by 6.5 percent year-on-year.
