A 24-story River North apartment tower at 320 W. Illinois Street, home to roughly 400 rental units, is officially on the block after its owners hired a broker to hunt for a buyer. The listing drops one more sizable downtown property into Chicago’s already busy multifamily pipeline and is expected to draw institutional interest, given the building’s scale and location. Owners and industry watchers say the move follows a round of renovations and refinancing meant to tee the property up for a sale.
As reported by CoStar, TPG Angelo Gordon and Waterton have tapped JLL to market River North Park at 320 Illinois St. CoStar identifies JLL Capital Markets brokers Mark Stern, Zachary Kaufman, and Kevin Girard as the leads on the assignment. Industry listings describe the asset as a 24-story, roughly 400-unit tower in River North, close to the Merchandise Mart and the riverwalk.
This is not the first time the property has quietly made the rounds. The Real Deal reported in 2021 that Waterton and Angelo Gordon previously tapped JLL to market River North Park, and the tower has since seen multi-million-dollar capital improvements. REJournals and the building’s marketing materials highlight upgrades to lobbies, amenity spaces, and unit interiors that ownership used to push occupancy and rents higher ahead of this latest marketing push.
Market momentum and what it means
Chicago’s apartment market drew outsized investor attention in 2025 as downtown fundamentals stabilized and new deliveries slowed, creating a deeper buyer pool for well-located assets. Investors are getting more selective, pricing buildings based on income durability and financing options instead of assuming every property will trade at the same cap-rate shift. According to Matthews Research, cap-rate dispersion and tighter lending standards are shaping which buyers can actually close on large downtown towers this year.
Who might bid and what to watch
Bidders for a 400-unit River North tower typically range from private-equity apartment funds and public REITs to deep-pocketed regional operators, with pricing heavily influenced by debt availability and the eventual asking price. As CoStar notes, JLL’s Chicago capital-markets team will run the marketing process, a timeline that can stretch for months while buyers complete due diligence and lock in financing. The building’s recent capital work and central River North address should keep it in the mix even as lenders stay choosy.
For residents, a sale may not trigger immediate shakeups, although new owners often look to reposition properties or sweeten amenities to drive long-term returns. The building’s leasing site lists current unit availability along with amenity details for renters and prospective buyers who want a closer look: River North Park.
