At 1730hrs the box was dropped for 13411 Old Marlboro Pike for the house on fire.  Engine Co. 20 / 45 and Batt Chief 7 ( Chief 20A ) along with surroundings companies were alerted.  While enroute PSC had a couple updates 1 reporting it was a mattress on the back deck and the other reporting someone was trapped inside.  Batt Chief 7 arrived on scene to find a 2 story single family with fire showing from roof / cockloft and assumed the Old Marlboro Pike command.  Engine Co. 20 was next on scene and the crew went to work stretching a line and getting a quick aggressive attack on the fire. Chief 20 and 20B arrived on scene and took Div 1 and Basement Div.  Engine Co. 45 arrived and pulled a back up line to Div 1 with Co. 20. and  soon after the fire was brought under control and some units were released.