The owner of one of Chicago's largest apartment complexes is facing a lawsuit from investors who say they were promised a way out of their deal and never got it. Affiliates of The Straus Group, a Fort Lee, New Jersey investment office, filed suit in Cook County Court on October 6 against entities tied to Antheus Capital, the private equity firm that owns the 1,869-unit Lake Meadows complex at 3233 S. King Drive in Bronzeville.
The dispute centers on a $30.5 million investment the Straus Group affiliates made in Lake Meadows Holdings LLC, the Antheus-affiliated entity that bought the sprawling 30-acre lakefront property for $161 million in 2023, according to Bisnow. At the time, the deal made Lake Meadows the Chicago area's largest multifamily property by total units to trade in more than 15 years, the outlet reported. The lawsuit alleges that Straus Group's investment agreement included a put option, a one-time right allowing the group to force an Antheus subsidiary to either buy out their interests at fair-market value or put the entire property up for sale.
What Triggered the Legal Fight
According to the lawsuit, Antheus co-founder Eli Unger presented investors with two alternative business plans before they signed on: one centered on renovating the property while units stayed occupied, and another built around relocating residents, emptying buildings, and completing major improvements while they sat vacant. The complaint claims that emptying buildings is no longer part of the company's plan, and that this shift in strategy is exactly the kind of material change that should trigger the put option under the terms the two sides negotiated. The put option becomes exercisable at the earliest of the contract's 10-year anniversary, the completion of renovations, or a determination that renovations are no longer planned, per the lawsuit as reported by Bisnow.
Straus Group affiliates say they tried to exercise that option in September, but an Antheus affiliate's lawyer responded ten days later with a letter stating that no triggering condition had actually occurred. The lawyer reportedly argued that the ten-year anniversary of the contract had not yet passed and that renovations were still ongoing. The lawsuit counters that the two business plans differed materially in risk, timeline, and potential investor returns, and that Straus Group's willingness to invest in the first place hinged partly on having a defined exit once renovations wrapped up or the business plan changed.
A Property Already Under Pressure
Per the lawsuit, Antheus has spent roughly $10 million on upgrades and capital improvements at Lake Meadows since acquiring the property, completing that work without relocating residents. That spending comes as tenants at the nine-building complex have separately pushed back against the pace of basic infrastructure fixes. In April, residents of the nine-building complex, which is home to roughly 3,000 people, rallied to demand that ComEd complete long-delayed electrical transformer upgrades affecting reliable air conditioning, as Hoodline reported at the time.
Straus Group is now asking a judge to compel Antheus to undergo a formal property valuation process and is seeking damages equal to the fair-market value of its stake. A document filed as part of the lawsuit estimates that the original $30 million investment had grown to roughly $70 million in value as of June, the outlet noted.
A Landmark Property's Long Ownership History
Lake Meadows was built in 1954 by Chicago real estate firm Draper & Kramer and designed by architecture giant Skidmore, Owings & Merrill, making it the city's first major mid-century urban renewal development, according to Preservation Chicago. Draper & Kramer sold Lake Meadows to Antheus in 2023; Hoodline previously detailed the firm's sale of the 43-story Eleven Thirty tower in the South Loop for $166 million.
Antheus has been acquiring thousands of units across Chicago's South Side since 2007, according to Crain's Chicago Business as cited in the Bisnow report. The firm's buying spree has continued at a rapid clip: in December 2025, it paid close to $58 million for Vue53, a 267-unit student-oriented building in Hyde Park near the University of Chicago, and in November 2023 it bought the 275-unit Aspire Residences tower in the South Loop from Draper & Kramer for $59 million, per The Real Deal. Antheus runs its properties through management firm Mac Properties, which oversees thousands of units across Chicago, Kansas City, and St. Louis.
Investor Background and Open Questions
The Straus Group describes itself as the private investment office of healthcare entrepreneur Daniel Straus, who chairs and leads New Jersey-based nursing home operator CareOne LLC and has invested across real estate, hedge funds, private credit, and equity for more than 25 years. Neither Antheus Capital nor the Straus Group could be reached for comment at the time of Bisnow's original report.
