while one in ten (10.7%) of residences in casselman were built before 1971, according to the 2001 federal most residential development in the neighbourhood were built during the 1970s. it was between 1971 and 1980 that three out of every five (57.9%) of all residences were constructed. another one in four (23.2%) were built between 1981 and 1990. the remaining residences were built after 1990.