You'd usually describe a house as haunted if something bad has happened in the past (e.g. a murder, evil spirits, etc) and people are superstitious about this (e.g. believe some ghosts are still living in the house). Hard to see how an owner can fix this. All the usual problems the owner can fix (floorboards need replacing, gutters need cleaning, general repairs) aren't really examples of a house being "haunted".