Fire broke out just after 1 a.m. Tuesday in half of a twin in the 600 block of Powell Street in Gloucester City, New Jersey.
Firefighters called in a second and third alarm as flames shot into the air, and the scene was captured by an Action News viewer.
The residents of both sides of the twin escaped.
A 43-year old woman was taken to Our Lady of Lourdes Medical Center for treatment of burns to her neck and smoke inhalation. A firefighter also suffered minor burns. He was treated at Cooper Medical Center and released.
The fire was declared under control around 3 a.m. Early indications from investigators show that the fire was started accidentally.