The fire broke out just before 5 p.m. in a building on Telford Avenue at South Orange Avenue.
The building is said to consist of stores on the lower level with apartments above.
It's not yet known how the fire started, but it eventually spread to the building next door.
One firefighter actually fell through the floor while fighting the fire, resulting in a mayday call. The firefighter was quickly rescued and was not hurt. In fact, he resumed fighting the fire!
Due to smoke and water damage, two families consisting of three adults and seven children were relocated by the American Red Cross.