CHICAGO, IL – Peak Realty’s team has begun pre-leasing for Portrait, a new-construction mixed-use property owned by Mavrek Development. Located at 948 W. Sunnyside Ave. in the trendy Uptown neighborhood, the building boasts 59 luxury apartments with sought-after resident amenities as well as approximately 6,500 square feet of first-floor retail space. Shane Rachman, Peak Realty…