Firefighters say the family had grilled dinner and then went to bed.
Some embers from the grill fell onto their wooden porch overnight and caught fire.
The flames spread across one side of the home and became so intense that they melted the siding on a neighbor's house.
The home sustained extensive damage, but the family -- a man, a woman and a child around 10 years old -- awoke to the sounds of their smoke detector and escaped unharmed.