One way is to try religious or spiritual remedies. For example, having a priest come and bless the house. Another option is to use sage to smudge the house, which is believed to clear negative energy.
You need to build up suspense. Start with small creepy details and gradually increase the tension. Also, create interesting characters that the readers can care about.
To write the scariest haunted house story, start by creating a creepy atmosphere. Describe the setting in detail, like old creaking floorboards and dim lighting. Add unexpected noises and strange shadows.
Start by creating a spooky setting. Describe the old, creaky house with strange noises and dim lighting. Add some mysterious characters and a backstory to build suspense.
First, create a spooky atmosphere. Use descriptive language to make the readers feel the eeriness. Also, build interesting characters that face terrifying situations in the haunted house.