Here is what the prospective buyer will get for his money besides the four walls and roof: The sounds of phantom footsteps, a strange knocking, a "hardly noticeable" scream at 3:13 a.m. (once a week), and "the occasional ghastly visage lurking behind you in the bathroom mirror." That little extra occurs rarely and only in an upstairs bathroom, according to the listing.
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If that's "slightly haunted," it's hard to figure out what "very haunted" might be. For sale: split-level ranch packed with poltergeists?
Since uploading his for-sale-by-owner listing on real estate website Zillow on Sunday, Leeson has received several offers and interest from buyers and from ghost hunters across the country.
"When I was writing it, I had been thinking about it, and I went back and forth," Leeson told Zillow. "The way I worded it—I was trying to keep it light. I have been reading online, and people saying you are supposed to disclose it. I don't know the laws here, but thought better safe than sorry."
In Leeson's view, any publicity is good publicity, and so far, disclosing the home's supernatural phenomenon has served him well. He plans to have an open house after Christmas to close the deal.
Leeson was not immediately available to comment to NBCNews.com.
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But he clearly believes the haunting might be a selling point—and he might be right.
A recent survey by realtor.com found that more than half of home buyers are open to buying a haunted house and 35 percent of the nearly 1,400 people who took the survey say they have lived in a haunted home.
"When purchasing a home, buyers want to know what they are getting into and that includes anything potentially spooky," said Alison Schwartz, vice president of corporate communications for Move, which operates realtor.com.
"Our data reveals that while the majority of consumers are open to purchasing a haunted home, many buyers conduct research on a home's history to be aware of any weird incidences."
But while some respondents "are willing to purchase a haunted home at a discounted price, many say levitating objects, ghost sightings and objects moving from one place to another would deter them from purchasing a home," she said.
According to Frank L. DeFazio, a real estate agent and former lawyer with the Center City Team in Philadelphia, state law only requires sellers to disclose material defects, such as dry rot or ant infestations.
"There is a distinction between physical defects and psychological flaws, or stigma like murder. Haunting is difficult to prove," he told NBCNews.com.
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DeFazio recommends full disclosure, as leaving out potentially alarming information about a home can result in a drawn-out lawsuit, as seen in the case of Janet Milliken, a Pennsylvania resident who sued the seller and listing agent of her home for not disclosing a murder-suicide that took place there a year before she bought it.
And in some cases, such as a home where a famous person died, DeFazio says full disclosure can have a positive effect on resale value. "Especially in a historic district like Philadelphia, where President James Madison died, that can increase the value."
Some disagree. Randall Bell, a specialist in so-called stigmatized real estate, says the recent involuntary manslaughter conviction against Michael Jackson's doctor, Conrad Murray, could make it difficult to sell the mansion where the King of Pop died.