It happened around 5 a.m. Monday morning along the 4300-block of North Sheridan Road, just south of Montrose.
Police say 22-year-old Patrycja Wiszkowska, of Addison, died after she fell from a ladder that lead to the roof. Her death was ruled an accident.
Police say Wiszkowska was intoxicated at the time of her fall. She had been attending a party in the building.