The fire broke out shortly before 11:30 p.m. on the second floor of the three-story Maple Avenue building, which houses the Sud's City laundry on Palisade Avenue.
It quickly blew through the attic and roof, collapsing a rear portion of the building collapsed soon after.
Utility wires briefly caught fire in the stubborn blaze, which was finally brought under control at 1:49 a.m.
Jeff Stang produced up-close video:
Several photographers supplied intense images (below).
A firefighter sustained a minor injury falling down stairs. No other injuries were reported.
The cause wasn't immediately determined.
Mutual responders included firefighters from Elmwood Park, Lodi, Saddle Brook, Teaneck and Wallington.
Click here to follow Daily Voice Northern Highlands and receive free news updates.