Sussex Fire Box 74-3, reported residential structure fire in Delmar, Delaware side. Delmar, Laurel, Hebron, Sharptown and Mardela Springs responded to the scene. 74 Command arrived first and advised fire showing from the front of a house on Delmar Road. Engine 74-3 arrived on-scene and pulled two attack lines. 74-3's crew quickly knocked the fire. Hebron Engine-Tanker 5 pulled a third hose line to the rear of the house. Laurel Tower 81 ventilated the roof. Sharptown and Mardela Springs supplied water and manpower for overhaul and Rapid Intervention Teams if needed. Gumboro Fire Dept provided fire stand-by coverage at Delmar fire station. Delaware Fire Marshals are investigating. Delmar Road was closed while crew worked on the fireground.