A 1913 plan with 1940s and 1950s houses
Leaside is regularly described as a 1913 community, and the street plan genuinely is that old. The housing is not. The town’s population was still under 500 as late as 1929, and the census shows it going from 938 people in 1931 to 6,183 in 1941 and 16,233 by 1951. That is the real build window, and it matters for floors: these are late-1930s through 1950s single-family homes, the period when plywood was replacing plank as the standard subfloor but was still being nailed down rather than glued. Nails hold a panel in place without drawing it tight against a joist that is slightly out of plane, and that small remaining gap is where the noise comes from decades later.