St. 216, 285, 111TK, & 221RIT were alerted for a reported structure fire. As units were going enroute, OAK PD reporting a working structure fire. 216EN arrived on scene with 216 Chief assuming Command. Command reported a working fire with heavy fire on the second floor and thru the roof in a 2 story newly constructed town home duplex. 216EN placed a exposure line in service immediately on Side Bravo. 285EN was establishing a water supply and 221SQ was transitioned from RIT to Suppresion. 221SQ Crew along with 216AST stretched an attack line and began making entry. Command requested a 2nd Alarm, bringing 222EN, 225EN, 227RQ, 315EN, and 234EN. 111TK positioned on Side Alpha and went to work on Truck Duties. 315EN established a secondary water supply to the rear of the structure. The remaining Penn Hills Companies arrived and assisted with extinguishment, overhaul and ventilation along with 234EN. 227RQ also handled refilling SCBA cylinders. Crews made quick work and returned in service.