Affinius funds a West Loop tower on scarcity three years out

Affinius Capital has committed $130.4 million in construction debt for a 25-story, 380-unit apartment tower at 1000 West Jackson Street in Chicago's West Loop, backing a joint venture of Mavrek Development and Fengate Asset Management, Commercial Observer first reported, and the wager is that the neighborhood's supply stays constrained through the building's mid-2028 delivery. CBRE's John Parrett arranged the financing, and ground broke this month.

The unit count splits 304 market-rate and 76 affordable, with more than 21,500 square feet of ground-floor retail and roughly 31,000 square feet of indoor and outdoor amenities—a pool, a fitness center with a basketball court, a resident lounge, coworking rooms, and indoor parking—the amenity load a 2028 lease-up in a live-work-play neighborhood is expected to require. David Greenburg, a managing director and co-head of debt origination at Affinius, called the project an “institutional-quality multifamily development” in a neighborhood where multifamily supply has been constrained against population growth he attributes to the revival of Fulton Market. “1000 West Jackson pairs proven sponsorship with strong fundamentals,” he said.

The commitment lands inside a busy run for the lender, which closed a $48 million deal and a $141 million deal within the past two weeks and announced a $390 million transaction on Sept. 3, a cadence across a platform measured at $30.4 billion in regulatory AUM, though the entity file does not attribute the totals to multifamily specifically.

Scarcity is the entire underwriting. The West Loop has absorbed billions of dollars of development over the past decade, so the constraint case rests on the pipeline thinning between now and 2028 rather than on rents rising from today's level. As this publication has argued, apartment pricing is bifurcating, with existing stock clearing well below peak marks while better-capitalized buyers use new listings to consolidate. Construction debt sidesteps that comparison entirely, because there is no old basis to write down on a hole in the ground—which is precisely why lenders at Affinius's scale keep funding it. Mid-2028 is when the answer arrives, and the 76 affordable units will not be paying for it. The 304 market-rate units are, and filling them at pro forma is what Affinius is being paid to wait three years for.