The City of Orange Fire Dept. responded to a commercial fire at the Coastal Lumber Company on DuPont Drive last night around 9:00PM. Arriving crews found the retail section of the store involved in heavy fire. A defensive fire control posture was taken by the arriving fire crews because of the volume of fire and the extent of the fire spread. The Denton County task force that has been staged in Orange County since hurricane IKE responded to assist the City of Orange crews. Pinehurst and Little Cypress fire departments assisted with providing response coverage for the city. The cause of the fire is under investigation and is not considered suspicious at this time. Crews remained on the scene throughout the night extinguishing hot spots.