If I were a con artist, I would offer my services to conduct some sort of ritual or seance. i would figure out how concerned about this you are, how much money you may have access to and find a ghost or three that I could, for a price, get rid of for you.
State laws vary as to whether previous deaths in a home must be disclosed. In my state they are not a material fact, but in others they are if the death occurred within certain time frames or at all.
Contact some local agents as to what the law in TX is and as others have said, research news papers, police or the neighbors. Just be very wary of psychics or mediums, they will find your money, but not a ghost.