Ratio of Duplexes to Single Detached Houses

See 2016 version of this map at same scale here: https://censusmapper.ca/maps/696 This is the ratio of Duplexes to Single Detached Houses, so a neighbourhood with a low number would have relatively fewer of it's housing stock as duplexes. Per census definitions, a detached house with an auxiliary unit, such as a basement suite, is listed as a duplex. In a neighborhood with only detached houses, some of which contain basement suites, a ratio of '1' would imply that every third house has a basement suite (Single+Single+(Main+Basement)). A ratio of 2 would imply that every other house has a basement suite (Single+(Main+Basement)) The 'Blue zone' with large numbers of duplexes/basement units seems to be a Lower Mainland phenomenon. Compare to Calgary or Toronto. In Montreal, however, seems to have very few duplexes in single family areas and very few single family houses in duplex areas.

Author: BDawe

Dataset: CA11F, CA11N