Firefighters were on the scene late Monday afternoon at a fire at the Ponderosa trailer park in the west end of Davenport.
The fire was confined mostly to a back bedroom in a mobile home, firefighters said, but there was smoke and water damage throughout.
Crews extinguished the blaze in about an hour.
The American Red Cross was on hand to assist a husband, wife, daughter and dog displaced by the fire, which remains under investigation.
No one was injured.