campbell house is an 1822 heritage house and museum in downtown toronto, ontario, canada. it was built for upper canada chief justice sir william campbell and his wife hannah. the home was designed for entertaining and comfort, and constructed at a time when the campbells were socially and economically established and their children had grown to adulthood. the house is one of the few remaining examples of georgian architecture left in toronto and is constructed in a style in vogue during the late georgian era known as palladian architecture.