In Hong Kong, houses rumored to be haunted can lose about a fifth of their value on average, and if there has been a murder on the property, the value can drop by a third. This significant decrease in property value is due to the superstitions and beliefs surrounding such houses, known as 'Hongza' or calamity houses. Despite having stunning views and locations, the stigma of haunting or tragic events can have a substantial impact on the market value of properties in Hong Kong, one of the most expensive places to buy property in the world.