Downtown Chicago’s Office-to-Apartment Transformation Has Officially Begun: Inside The Bellwether
CHICAGO— Downtown Chicago's plan to turn underused office buildings into housing has reached a major milestone.
On September 9, 2026, city officials and developers celebrated the opening of The Bellwether Residences at 79 W. Monroe St., the first completed office-to-residential conversion under Chicago's LaSalle Street Corridor Revitalization program. The first residents began moving in around the end of August.
The $64.2 million redevelopment converted upper floors of the historic Rector Building into 117 apartments, including 41 affordable units, while retaining commercial and institutional uses on the lower floors.
That makes The Bellwether important for more than its 117 apartments.
It is the first finished example of a much larger strategy to change parts of Chicago's traditional central business district from an office-heavy environment into a more mixed-income, mixed-use Downtown neighborhood.
Inside The Bellwether at 79 W. Monroe
Courtesy of Ware Malcomb Architects | A rendering of 79 W. Monroe
The Bellwether occupies the 14-story Rector Building at Monroe and Clark, one of Downtown Chicago's historic early commercial towers.
The original building dates to 1905, with a major addition completed in 1924. It later became closely associated with Bell Federal Savings & Loan and its distinctive Weather Bell, which has been restored as part of the redevelopment. The building received official Chicago landmark status in March 2025.
Developer R2 Companies, working with Lagfin S.C.A., transformed former office space into a mix of studio, one-bedroom and two-bedroom apartments.
Of the 117 residences, 41 are designated affordable for households earning around 60% of Area Median Income, meaning approximately 35% of the apartments are affordable. That exceeds the LaSalle program's 30% affordability requirement.
Residents also have access to amenities including:
Co-working areas
Resident lounge
Fitness center
Two saunas
Rooftop deck
Dog spa
In-unit laundry
The redevelopment did not empty the entire building and rebuild it as apartments. A charter school and Walgreens remain on the lower floors, creating the kind of mixed-use building the city's Downtown strategy is trying to encourage.
Why Chicago Helped Finance the Conversion
The economics behind The Bellwether are just as important as its design.
The project received $28 million in Tax Increment Financing assistance from the City of Chicago, nearly half of the project's $64.2 million cost. Its landmark designation also helped support approximately $7.8 million in federal historic tax credits.
That public support reflects a basic challenge with office conversions.
Older Downtown office buildings may look like obvious candidates for apartments, but converting them can require expensive structural work, new plumbing, kitchens and bathrooms, updated mechanical systems, residential layouts and historic restoration.
At the same time, Chicago's office market still has significant excess space. CBRE reported 26.8% direct Downtown office vacancy in Q2 2026, while cumulative net absorption has remained negative since 2023.
Rather than waiting for every older office tower to refill with workers, the city's strategy is to help some buildings find an entirely different purpose.
The Bellwether is now proof that the idea can move from proposal to financing to construction to actual residents living Downtown.
What This Could Mean for Downtown Chicago
For decades, large sections of the Loop were built around the weekday office population. Workers arrived in the morning, filled office towers and left after business hours.
More residential conversions could gradually change that pattern.
Thousands of additional Downtown residents could support restaurants, grocery stores, retail, entertainment and other neighborhood services beyond the traditional 9-to-5 workday.
They could also help preserve older Chicago buildings that may no longer make economic sense as traditional offices.
The Bellwether demonstrates that preservation and redevelopment do not necessarily have to compete. Original staircases and historic architectural features were retained, the Weather Bell was restored, and a 120-year-old commercial building now has an entirely new residential use.
There are still major questions ahead, including whether the remaining conversion projects secure financing, how quickly new apartments lease and how much public investment will be required.
But the Downtown office-conversion story has entered a different phase.
Chicago is no longer only talking about turning offices into homes. People are now moving into them.
For buyers, renters and property owners in The Loop, South Loop, River North and surrounding Downtown neighborhoods, this conversion wave is worth watching because it could reshape housing supply, street activity, retail demand and the way Downtown Chicago functions after working hours.
The Cory Tanzer Group at Option Premier helps buyers, sellers and renters understand how major development and housing trends are changing Chicago neighborhoods and what those changes could mean for their next move.
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