CHICAGO — Castle Lanterra Properties (CLP) has sold Midpointe Apartments in Chicago to an unnamed fund manager for $49.5 million. CLP acquired the 424-unit multifamily property in 2014 for $28.5 million. The company invested millions in upgrades to the property that included the construction of a new leasing office, resident lounge and fitness center. Other improvements included the installation of energy-efficient roofs, LED lighting, new elevators, parking lot resurfacing and renovations to 30 percent of the units. CLP refinanced the property for $40 million in June 2017.