Firefighters kept the flames from spreading to the main area of the 2½-story River Road home, Fire Chief Alex Breuss said.
Investigators were trying to determine the cause of the two-alarm fire, which broke out in the rear yard around 8:15 p.m. and ravaged the atrium, partially collapsing the second floor, the chief said.
Firefighters had it knocked within an hour.
"Great job by all and everyone went home safe," Breuss said.
The chief thanked the mutual aid responders, including firefighters from Bergenfield, Englewood, Hackensack, Little Ferry, Ridgefield Park, and Teaneck, as well as Bogota police and DPW workers.
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