A joint venture between Mavrek Development and Fengate Asset Management has secured $130.4 million in construction financing to build a 25-story, 380-unit multifamily tower in Downtown Chicago, according to a Commercial Observer report published September 17, 2026. Affinius Capital provided the debt, while CBRE's John Parrett arranged the transaction. The deal matters because it signals continued lender appetite for large-scale multifamily construction in a submarket that has seen constrained supply but strong population growth, particularly around the Fulton Market area.
The project at 1000 West Jackson Street will include more than 21,500 square feet of ground-floor retail space and will divide its residential units between 304 market-rate units and 76 affordable units. The asset will feature approximately 31,000 square feet of indoor and outdoor amenities, including a pool, a fitness center with a basketball court, a resident lounge, coworking spaces, and on-site indoor parking. Construction broke ground in September 2026 and is expected to finish in mid-2028, according to the report.
David Greenburg, managing director and co-head of debt origination at Affinius Capital, described the project as an "institutional-quality multifamily development" and noted that Chicago's West Loop has been constrained by low multifamily supply but high population growth due to the renaissance of the Fulton Market neighborhood. Greenburg added that "1000 West Jackson pairs proven sponsorship with strong fundamentals," and said Affinius looks forward to working with Mavrek and Fengate. The Commercial Observer report is the sole full-text source for this analysis, and the financing amount is reported as both $130 million and $130.4 million within the same article.
The transaction fits within a broader pattern of institutional capital targeting Chicago's West Loop, which the report describes as a live-work-play neighborhood that has seen billions of dollars of new development invested into its real estate in the last decade. The inclusion of 76 affordable units alongside 304 market-rate units suggests the project is structured to meet local inclusionary housing or density bonus requirements, though the report does not specify the regulatory mechanism. The ground-floor retail component and extensive amenity package indicate a positioning aimed at attracting renters who value mixed-use convenience and lifestyle-oriented buildings.
Several limitations apply to this analysis. The dossier contains only one source read in full, and no independent confirmation of the loan terms, interest rate, loan-to-cost ratio, or other financing mechanics is available. The report does not disclose the total project cost, equity contribution from the joint venture, or the specific affordable housing program involved. The discrepancy between the headline figure of $130 million and the body text figure of $130.4 million is not explained in the source. Additionally, the report does not provide comparable construction loan data for other Chicago multifamily projects, making it difficult to assess whether this financing is priced above or below market norms.
What to watch next includes whether the project meets its mid-2028 completion target, how the 76 affordable units are administered, and whether the West Loop's supply pipeline accelerates in response to the population growth cited by Affinius. Future reporting could clarify the exact loan amount, the debt structure, and any participation from additional lenders. Until additional sources or public records become available, the evidence base remains limited to the Commercial Observer article.