Why my house can get so scary?

 A haunted house or ghost house is a house or other building often perceived as being inhabited by disembodied spirits of the deceased who may have been former residents or were familiar with the property. Parapsychologists attribute haunting to the spirits of the dead and the effect of violent or tragic events in the building's past such as murder, accidental death, or suicide. More scientific explanations for the perception that a house is haunted include misinterpreting noises naturally present in structures, waking dreams, suggestibility, and the effect of toxic substances in environments that can cause hallucinations.

According to science writer Terence Hines, cold spots, creaking sounds, and odd noises are typically present in any home, especially older ones, and "such noises can easily be mistaken for the sound of footsteps by those inclined to imagine the presence of a deceased tenant in their home."

10 Signs of a Haunted House:

1. Persistent unexplained noises It's only can match if you live in the house and you're on your own. It excludes if you live in a block of flats with noisy neighbours. But it doesn't say it can't happen. – These might come in the form of footsteps, knocks at the door or windows, scratching noises, or a vague banging. The sounds might be loud and impossible to ignore, or subtle and only detectable at certain times.

2. Electronics acting strangely – Are your home electronics are always “misbehaving?” Maybe your TV suddenly flickers on without any buttons being pressed. Or maybe your lights always act up – you remember so clearly turning your basement light off before leaving the house, but when you return, it has mysteriously turned back on. But if it's an old place or faulty electric goods you need more likely an electrician than an exorcised.  

3. A shadowy figure Seeing strange shapes or shadows is a common occurrence in houses that are “occupied.” The shadows can sometimes take human or animal-like forms, but they rarely appear directly in your field of vision, making them difficult to identify. kids and animals, mostly cats probably can see ghosts

4. Cold spots – Do areas of your house become incredibly cold for no reason? This is a classic sign indicating the presence of a supernatural being. (Pro tip: invest in a small space heater and place it in the centre of the cold spot. If the area fails to warm up, you’ll have serious reason to suspect that your house is haunted).

5. Household items disappear and reappear at random, we’ve probably all experienced this at one time or another. You set an item down, get distracted by something, and when you turn back around, it’s gone. You look everywhere but to no avail. Hours later, long after you’ve given up your search, the item reappears in the exact place you left it. Its more likely ghost activity  unless we have mental health disorder or we are under the influence of certain  chemical/drugs/medicine

6. Doors opening or closing – Few people actually see it happen, but doors and cabinets acting erratically is a frequent complaint from residents whose houses turn out to be haunted. They might hear the familiar sound of a door swinging on its hinges, only to round the corner and find it completely secure upon further inspection. Or perhaps they enter a room and discover a door that they knew was closed to be wide open – or vice versa. It happened to me once. Been home on my own. A couple of weeks after my uncle died. Windows and door were closed cause it was a wintery day. I was making myself ready to go out when doors to the bathroom slammed loudly. 

7. Peculiar pet behaviour – Similar to their acute sense of natural disasters, most animals will begin acting strange if they sense a supernatural presence. Cats might stand in doorways and focus intently on seemingly empty rooms. Dogs might bark for no reason, or become scared and retreat to “safer” areas of the house.

8. The “someone is watching me” feeling – This is hardly unusual, as some people report getting a sense that they’re being watched while out in public fairly frequently. However, if the feeling intensifies while in your house (a very private place), it could be attributed to an act of the paranormal.

Warning: the last two items on this list are SERIOUS indicators of paranormal activity. If you’ve experienced either of these phenomena, do not take the experience lightly.

9. Mysterious voices – Especially if they come in the form of whispering or crying. Unless the noises can be clearly identified, this is a glaring sign of paranormal activity in your home. If the voices persist, ask a friend or family member to come to investigate with you. If you can both hear the noises, it might be time to contact an expert or even explore new living arrangements.

10. Feeling of being touched – This one is the biggest red flag. It could be an innocuous touch, like something lightly brushing against you. In more severe cases, people report feeling a hand clamp down on their leg or shoulder. Apparently, not all ghosts are friendly…

Only one or 2 of them doesn't give a reason to worry. But if it's 7-10 you're in danger to have a house been possed by a ghost or ghosts.

Sources: 

https://www.themonastery.org/blog/2017/10/10-signs-your-house-might-be-haunted/#6WqQ1lTpBguOt6va.99

https://en.wikipedia.org/wiki/Haunted_house

personal experience