Police tell KCBS Radio that the man is veteran skyscraper climber Dan Goodwin. The 54-year-old Lake Tahoe resident's other climbing credits include Chicago's Sears Tower.
Goodwin used suction cups but no ropes to scale Millennium Tower, a 645-foot residential building overlooking San Francisco Bay. Police say he ignored orders to stop climbing.
The San Francisco Fire Department says Goodwin was too high to reach by the time firefighters got to the building.
Goodwin reached the top just before 5:30 p.m. Monday, about three hours after he began. He affixed an American flag to the building before surrendering to waiting authorities.