Unexplainable sounds when nobody else is around. Such as hearing your name being called out, or even wispered.
Strange lights, floating orbs.
Seeing shadows, unusual sights out of the corner of your eye maybe even directly.
Strange sudden areas in the house that are icy cold, usually to the point of seeing your own breath.
Personal items suddenly found missing only to reappear in the most unlikely places.
Disturbing or unusual dreams that only occur when you sleep in the haunted location.
Feeling like someone is watching you when you know that nobody is.
Pets such as dogs chasing nothing or barking at nothing. Any type of unusual behavior.