Halloween can be a fun time, but it can also be a costly one for insurers according to a report from across the Pond. A U.K. insurer quoted in an article by the London Guardian newspaper says that home insurance claims are expected to rise by 270 percent on Halloween. Another U.K. insurer claims that 3.6 million homeowners will face damage to their properties as some revelers go too far in their pranks. This side of the Atlantic Halloween brings with it increased concerns about drunk driving and liability risks, I.I.I. finds. Social host liability laws exist in many states so anyone hosting a Halloween party should take steps to limit their liquor liability and make sure they have the proper insurance. I.I.I. vice president Loretta Worters notes that depending on the jurisdiction, violations of social host laws can lead to civil or criminal fines, imprisonment and monetary damages awards. Bear in mind that in 2008, 58 percent of all highway fatalities across the U.S. on Halloween night involved a driver or a motorcycle rider with a BAC of .08 or higher, according to the National Highway Traffic Safety Administration (NHTSA). The I.I.I. has a list of tips on how to protect yourself and your assets if you plan on hosting a Halloween party.