Cash and jewellery went missing from a home in Thame after two men were seen acting suspiciously in the street.
Police are now appealing for witnesses to call 101 after the burglary at about 1pm on Monday in Chowns Close.
Police described one suspect as about 40, of a large build, about 5ft 10ins tall with dark hair. He was wearing a light grey hooded top and jogging bottoms.
The other suspect is described as about 18 to 20, of a slim build, and also about 5ft 10ins. He was wearing a dark woolly hat and dark clothes.