Rose's 20-under 268 was two strokes better than South Africa's Retief Goosen -- the 2001 Volvo Order of Merit champion -- and Martin Maritz and England's Mark Foster. A trio of golfers, including Ireland's Paul McGinley, finished three shots off the pace.
Following the victory, Rose immediately dedicated the title to his father Ken, who is ill. His brother Brandon and grandparents were able to attend the event.
"To win in front of my brother and grandparents was just awesome," Rose said. "But I just wish my mom and dad had been here and that would have been the full set. My mom was in tears when I spoke to her but this win is for my dad more than anyone. He is the guy to which I owe most."
Rose, who began the day four strokes behind Maritz, is the third straight first-time winner at this event.