Yeadon Fire Company responded to an Automatic Fire Alarm at Marshall House Apartments, while enroute the assignment was upgraded to a Building Fire. Ladder 16 arrived on scene and reported mulch burning on the exterior. Crew’s quickly gained access and checked the basement apartments, but luckily there was no extension. Quint 3 stretched 1 3/4 and put out the mulch fire. Ladder 16 ventilated the apartment and crews cleared the scene shortly after.