Dispatched to a residential structure fire on West Lee Highway . Upon arrival, found a two-story, single-family dwelling with heavy fire on the C side on both floors. Engine 3 advanced a 1.75″ handline to the C side and knocked down the visible fire. A search was initiated with negative results. A second 1.75″ line was advanced through the A side main entrance to complete extinguishment. There were no injuries reported and the cause of the fire is under investigation.