The blaze was quickly knocked down and was declared under control at 4:39 a.m.
The Summit F.D. was joined at the scene by the Summit Police Department and Summit Volunteer First Aid Squad, while the Millburn F.D. assisted at the scene. The Berkeley Heights, Fanwood and Mountainside Fire Departments provided station coverage to Summit fire headquarters.
No injuries to residents or first responders were reported.
The cause of the fire is under investigation by the Summit F.D. investigation unit.