There are lots of reasons for which you should have your locks changed
Would you change the locks on a new property when you move house?
According to a new survey most would not.
Insurers suggest your home insurance claim is at risk of being turned down if a spare set of keys was used by a previous owner to commit burglary. Your insurer will normally need to see evidence of forced entry before paying out on a burglary claim.
Do not be a victim; ask your local locksmith for free advice and protect your belongings, home and personal safety.