How do you know if anyone died in your house?

Answer 1

You can search through many things like old newspapers to the internet and if you find anything strange like old notes or photos then probably.

This question reminds me this story:

Kisa Gotami had an only son, and he died. In her grief she carried the dead child to all her neighbors, asking them for medicine, and the people said: "She has lost her senses. The boy is dead. At length Kisa Gotami met a man who replied to her request: "I cannot give thee medicine for thy child, but I know a physician who can." The girl said: "Pray tell me, sir; who is it?" And the man replied: "Go to Sakyamuni, the Buddha."

Kisa Gotami repaired to the Buddha and cried: "Lord and Master, give me the medicine that will cure my boy." The Buddha answered: "I want a handful of mustard-seed." And when the girl in her joy promised to procure it, the Buddha added: "The mustard-seed must be taken from a house where no one has lost a child, husband, parent, or friend."

People die in any house, If you feel that you have dead spirits in your house, make your house unfriendly to dead spirits by using technique of Vastu Shastra, or Feng-Shui.