It happened around 7:30 Sunday morning on the 1800 block of Egg Harbor Road in Lindenwold.
First responders reported heavy smoke upon arrival on the scene.
One person was taken to an area hospital for second degree burns. The condition of that person has not been released.
The fire was placed under control in about 30 minutes.
Only one unit was reported damaged in the blaze. An investigation into what sparked the flames is still underway.