One person who suffered smoke inhalation was taken to the hospital after being removed from the Spring Street home, and two cats got out safely, responders said. No other injuries were immediately reported.
The four-alarm blaze broke out in the attic around 7:45 a.m., sending flames shooting through the roof.
It took nearly two hours to bring it under control, as firefighters battled poor water pressure caused by the recent deep freeze.
The cause of the fire wasn't immediately determined.
Firefighters from Elmwood Park, Garfield, Maywood, Rochelle Park, Saddle Brook, Wallington and Wood-Ridge assisted.
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