It happened just before 3 p.m. on the 200 block of Laguna Drive in Egg Harbor Township, New Jersey.
Officials say nobody was home at the time of the fire, but officers were able to safely rescue a family dog from inside the home.
One firefighter suffered a minor injury and was treated on the scene.
The fire was brought under control in about an hour.
The fire is believed to have been caused by a heating unit in the attic.
The incident remains under investigation.