A murder, suicide, or violent crime does not have to be disclosed during resale in most states, according to the National Association of Realtors. Most lawmakers agree that “psychological damage” is not a material defect to the value of a property. All the same, it's worth checking with the neighbors to learn more about a home’s history. The same goes for a haunted past, although the specifics vary by state. If a buyer asks, experts say sellers must tell the truth about any possible paranormal activity, which means it’s important to ask the right questions when approaching a deal.