1950s and 1960s subdivisions on postwar subfloor
Alta Vista’s houses come mostly from one postwar build-out. The land was part of the Billings Estate, worked by market gardeners, and belonged to Gloucester Township until Ottawa annexed it in 1950. Through the 1950s came Faircrest Heights and Applewood Acres in the north, Ridgemont in the south and Elmvale Acres in the east, which Robert Campeau built in the late 1950s; Urbandale Acres followed in the 1960s. In one Alta Vista census tract, 68.6 per cent of dwellings were built before 1961, 82.3 per cent before 1981 and only 9.6 per cent after 2000 (Statistics Canada, 2021 Census Profile). Houses of that age went up as plywood was replacing board subfloor, and the subfloor was typically nailed to the joists without glue. After sixty or more Ottawa winters, those nailed connections are where the noise comes from: a sheet that was held down but never drawn tight to a joist sitting slightly high or low.