A small old town and a big postwar annexation
Most Burlington floors date from after 1960. Wellington Square and Port Nelson were incorporated as one village, Burlington, in 1873, and it became a city in 1974. The date that matters for housing is 1 January 1958, when the town took in Nelson Township and the Aldershot area of East Flamborough Township, growing to roughly 55,000 acres and about 32,000 people; by the 1960s most Aldershot farms had been sold to developers. The 2021 census shows the result: of 73,180 occupied dwellings, 14.0 per cent were built in 1960 or earlier and 33.5 per cent from 1961 to 1980 (Statistics Canada, 2021 Census Profile). Houses of the 1960s and 1970s usually have plywood subfloor nailed to the joists, and after 45 to 65 years of winter drying and summer swelling those nails loosen and rub. Aldershot is older than the city average: in its L7T postal area, 27.0 per cent of homes were built in 1960 or earlier. The other older pocket is the downtown core and Roseland, a 1920s planned garden suburb; several survey years circulate for Roseland, but they trace to property marketing, so we give the decade only.