The fire started on the top floor of a two-story home on College Avenue in the Claremont Village section at about 1:30 p.m. It then spread to five other homes.
The FDNY said the fire response quickly grew, going from a two-alarm fire to four alarms in about 20 minutes.
Everyone was able to get out safely. Though, one civilian and five firefighters were treated for minor injuries.
Here's video showing the scene:
Fire officials said it appeared the fire had been burning for quite a while before the FDNY was called to the scene.
FDNY spokesman Jim Long said the four units in the middle unit have extensive damage, and three of them are likely beyond repair.
Twenty families are displaces as a result of the fire, and the Red Cross is assisting.