Around 630 in the morning the box alarm was sounded for a building fire in the 900 Block of 9th Ave in Prospect Park. Ladder 2 was hitting the street as the working fire alarm was being dispatched. 08-9A was on location with a working fire in the basement and smoke showing. Ladder 2 was ordered to the front of the building and started throwing ladders and ventilating the basement windows. Engine 8 advanced an attack line in the basement while Rescue 48 was doing a search of the building. Engine 8's crews quickly found and extinguished the fire in the basement. Ladder 2's crew then put multiple fans in service to ventilate the building. Crews went available after picking up the equipment.