Firefighters needed a little over 20 minutes to knock down the bulk of the Harrison Avenue blaze after it broke out around 2:15 p.m.
The two-alarm fire displaced a couple of families whose members all got out OK, responders said. EMS treated a firefighter for a minor injury at the scene.
Mutual aid responders included fellow firefighters from Elmwood Park, Saddle Brook and Wallington.
ALL PHOTOS: Damien Danis for DAILY VOICE
Click here to follow Daily Voice North Hunterdon and receive free news updates.