Security company ADT warns that although a show day might help to sell your property, it does leave your home more vulnerable to theft.
Robyn Farrell, executive head of 1st for Women Insurance, urges estate agents and home owners to be vigilant.
"There's no doubt that showing your home to strangers when you're trying to sell it increases your security risk. Not only can valuables be removed without your knowledge but criminals can pose as interested buyers or 'case' your home for a potential future robbery.
"The common modus operandi has been that the criminals come into the house under the pretence of being interested in viewing the property as potential buyers or renting it."
Farrell says the best precaution a home owner can take is to ensure that there is a security guard present during a show day. "A security guard should be provided, free of charge, by the estate agency."
He offers these tips for safeguarding your home: