At 2300 Hrs on 5/10 Bayonne Communication Center transmitted a box for a fire reported at 69 E. 25 St. Engines 3,5,7 Truck 2 & Car 42 were dispatched. As first due units arrived heavy fire was venting out the 3rd floor rear of a 3 story frame 25x 50 with a 2 story extension 25x20 to the rear with a patio on top.Engine 2 was dispatch as RIT unit on the confirmed working fire.Car 42 transmitted the 2nd alarm with in minutes of his arrival and Engines 4 & Truck 1 were dispatched along with Rescue 1(air unit).Companies made a quick aggressive interior attack and knockfire down with slight extension to the cockloft. The fire was under control by 2335 hrs.