Under Massachusetts General Law c. 93 s.114(b) & (c) states: The fact or suspicion that real property may be or is psychologically impacted shall not be deemed to be a material fact required to be disclosed in a real estate transaction. “Psychologically impacted” shall mean an impact being the result of facts or suspicions including, but not limited to, the following: …
(b) that the real property was the site of a felony, suicide or homicide; and
(c) that the real property has been the site of an alleged parapsychological or supernatural phenomenon.
No cause of action shall arise or be maintained against a seller or lessor of real property or a real estate broker or salesman, by statute or at common law, for failure to disclose to a buyer or tenant that the real property is or was psychologically impacted.
Notwithstanding the foregoing, the provisions of this section shall not authorize a seller, lessor or real estate broker or salesman to make a misrepresentation of fact or false statement.
So if you are buying a house you might want consider asking the seller if it is haunted, otherwise you could be boo out of luck.